Bolt Carriers Gun Parts
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1 hour ago
The Aero Precision 5.56 Bolt Carrier Group for AR-15 rifles is made from high quality materials with quality assurance measures like high pressure testing and magnetic particle inspecting. The bolt assembly is machined from 9310 steel and tested to ensure it can withstand thousands of high-pressure rounds. The Carrier assembly is machined from 8620 steel and the entire BCG is magnetic particle inspected to ensure every dimension is as precise at can be. The black Nitride finish increases hardness and creates an extremely smooth surface for ease of cleaning and improved reliability.
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1 hour ago
In building or upgrading an AR platform rifle, the bolt carrier group is, in many ways, the heart of the rifle. A quality BCG is part of what will make a rifle reliable, so it makes sense that the bolt and its carrier are one of those parts that precision manufacturing has really helped make into a part that can last for high round counts. If you’re looking to upgrade the bolt in your AR, consider the Aero Precision 6.5 Grendel Bolt Carrier Group in Black Nitride.
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2 hours ago , by Dealer
PREMIERE FIREARMS AR15 BOLT CARRIER GROUP AND AMBIDEXTROUS CHARGING HANDLE COMBO M16-cut carrier Machined from 8620 tool steel (carrier) and 9310 steel (bolt) Carrier has forward assist serrations Salt bath black nitride finish – advanced lower friction coating that minimizes the need for lubricants and cleaning Properly staked gas key Machined & heat treated to USGI Specifications. Internally QC checked and tested to ensure reliability. Ambidextrous Charging Handle Lightweight & Durable Great for both Left and Right Handed Shooters Black Anodized Finish
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3 hours ago , by Dealer
Recoil Technologies 5.56 Nitride MPI Full-Auto Compatible Bolt Carrier Group Use 'gundealsoctober' at checkout to get 5% off your Entire Order - Valid Through The Month Of October Cannot Be Combined With Any Other Promotion Or Coupon Code If you like what you see, please don't hesitate to hit that "thumbs up" on the post Thanks! - Delta Team Tactical Sign Up for our Newsletter and receive an additional COUPON CODE for another purchase
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3 hours ago
Mil-Spec Carpenter No. 158® Steel Bolt Shot Peened; Mag Particle Inspected Chrome Lined Full-Auto Carrier Chrome Lined Gas Key; Hardened to USGI Specifications Secured with Grade 8 Hardened Fasteners Staked Per Mil-Spec ** These bolt carrier groups will have cosmetic blemishes that do not affect function. This may include, but is not limited to, scratches or slight variation in the finish color coat. FEATURES
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4 hours ago
AO Precision Premium Nitride Bolt Carrier Group - HPT/MPI These premium 9310 Bolt carrier groups are manufactured by AO Precision to the highest standards of top tier manufacturers within the industry. AO makes these HPT / MPI BCG's for other Military contractor juggernauts, such as FN America. All bolts are rigorously inspected and are individually High Pressure Tested and then go through a Magnetic Particle Inspection.
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6 hours ago , by Dealer
Use coupon code: (BCG) at checkout and save $20.00 Off your BCG purchase Features: 5.56/.223/.300 Black Out Full Auto Capable 9310 MPI and HPT Tested Bolt Case Hardened 8620 Carrier 4130 Gas Key Grade 8 Hardware With Proper Staking Gas Key Sealed With Permatex No.3 Nitride Firing Pin Black Nitride Treated For Reduced Friction And Increased Longevity Proudly Made In The U.S.A BRD11601 www.blackrifledepot.com
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7 hours ago
078-000-405WB M16 Lightweight Bolt Carrier Group 5.56x45mm Nickel Boron Cartridge: 5.56 mm NATO Finish: Nickel-Boron Designed for Lightweight, Low-Recoil Rifles The Brownells M16 Lightweight Bolt Carrier Group is purpose-built for AR-15 owners looking to improve aspects of their rifle with a simple component swap, eliminating the need for major component replacement or amateur gunsmithing work.
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1 day ago
**Maximum purchase -  5 per customer per day**The bolt carrier assembly is designed to work with any AR-15 rifle, upper half, or barrel designed for right hand ejection in the 5.56/.223 caliberSpecsCoating: Manganese Phosphate, chrome lined inside bolt area and gas keyBolt carrier material: 8620 steelBolt: 5.56/.223 Right-Handed Bolt assemblyIncluded parts: Bolt carrier, bolt assembly, cam pin, firing pin, and firing pin retaining pinDesign: M16 carrier with a shrouded firing pinStaking: Proper mil-spec staking of the gas key SKU: STAG300424
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1 day ago
This high quality bolt carrier group is a valuable addition to your AR15 build. Features: No Aero 'A' Logo M16-cut carrier Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) Carrier has forward assist serrations Black Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaning Properly staked gas key Shot peened HPT tested Black o-ring insert on extractor High quality BCG SPECS Specs Made In America? Yes Select Your Finish Black Nitride Platform AR15 Bolt Material 9310 Steel Carrier Material 8620 Steel
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1 day ago
This 458 SOCOM Bolt Completion Kit can be used for SOCOM chambered AR barrels and comes with everything other than the carrier. The MPI bolt is made from enhanced 9310 steel and is properly heat treated to exacting specifications. The bolt is shop-peened and magnetic particle inspected. This 9310 458 SOCOM AR bolt comes finished in black nitride and includes a Viton O-Ring. Bolt Machined from 9310 tool steel Heat treated to military specifications Shot Peened MPI Black Nitride Finish Extractor Heat treated to military specifications Shot peened
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1 day ago
RTB Complete M16 Bolt Carrier Group - PHOSPHATE with 2 FREE Magpul 30 / 10 Round PMAGs1x Phosphate Complete Bolt Carrier Group - MPIThis MIL-SPEC - MPI BCG (5.56) drops right into your M16, AR15 or M4 platform rifle and features:Enhanced 9310 Steel (Bolt)8620 Tool Steel (Carrier)Chrome lined carrier (auto)Chrome lined gas keyShrouded Firing PinMil-spec extractor spring, black extractor insert, Viton O-ringS7 tool steel extractorBolt is shot Peened and MPIMil-Spec gas key (4130 Steel) attached with Grade 8 hardware and properly stakedPLUS!2xFREE Magpul PMAG Black AR/M4 Gen 2 5.56x45 30-Round Ma
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1 day ago
9mm AR Bolt Assembly For Colt and Glock Pattern AR9 RiflesThis 9mm BCG is perfect for your 9mm Pistol Caliber AR-15 Build. Due to the increased rearward velocity, blowback AR systems require a heavier carrier. This AR9 Colt pattern bolt comes in at 14.8 ounces, providing the correct weight needed to tame your blow back system.Compatible with both Colt and Glock pattern builds. This BCG works great with any Colt style 9mm rifle and Colt pattern magazines.
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1 day ago
RTB Complete M16 Bolt Carrier Group - Black Nitride with 2 FREE Magpul 30 / 10 Round PMAGs1x Complete 5.56 Polished Black Nitride BCGOur Nitrided M16 BCG is micro polished before and after the Melonite process, producing a beautiful finish and an extremely slick surface. The carrier is made from 8620 steel. The bolt is made from 9310 steel and is MPI Tested and engraved.
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1 day ago
The Radical Firearms 5.56 NATO / 300 BLK Gen 2 Bolt Carrier Group features an M16 pattern 8620 tool steel carrier with 9310 alloy steel bolt and shot-peened for increased surface strength and durability. Each bolt is equipped with an extractor booster to ensure reliable cycling during rapid semi-auto or full-auto fire. A properly staked gas key prevents gas leakage that can lead to short stroking. Each assembly is magnetic particle inspected to ensure it is free from defects that can lead to premature failures.
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2 days ago
078-000-714WB M16 BCG 5.56mm NATO & Geissele Rapid Fire Enhanced Trigger Cartridge: 5.56 mm NATO Finish: Black Nitride Description Specs The Brownells M16 5.56 Complete Bolt Carrier Group is designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington.
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Brownells 151
2 days ago
078-000-715WB M16 BCG 5.56mm NATO & AR-15 30-Round PMAG GEN M2 10 Pack Cartridge: 5.56 mm NATO Finish: Black Nitride Description Specs The Brownells M16 5.56 Complete Bolt Carrier Group is designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington.
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Brownells 163
2 days ago
160-000-390WB M16 5.56 Bolt Carrier Group Cartridge: 5.56 mm NATO Finish: Black Description Specs
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2 days ago
Feature rich, high-quality, and affordable, Foxtrot Mike Products offer cutting edge solutions utilizing the highest quality materials and manufacturing processes available. This Premium 9mm Bolt Carrier Assembly is compatible with all GLOCK style AR builds. Maintaining a harder core than standard 8620 steel, this carrier is machined from 8620H. OD ground prior to machining in a pre-hardened state for improved tolerances post machining and coating. A long duration salt bath nitride finish is applied for a long service life and superior corrosion resistance.
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3 days ago
Description Receive $70 off with coupon code ‘308NitrideBCG’ at checkout – Limited to first 75 customers The  enhanced  bolt  carrier  is  designed  to  reduce  carrier  tilt/cant  during  recoil  and   increasing  reliability  by  strategically  relocating  key  bearing  surfaces.  The  enhanced  carrier  has  fewer   points  of  contact  resulting  in  less  friction  area  and  the  slight  increase  in  carrier  mass  extends  dwell   time  and  ensures  proper  gas  pressures  for  reliable  extraction. • Material:  Case  Hardened  8620  Steel
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3 days ago
Description The Lantac Full Auto Bolt Carrier Group .223/5.56 is machined from 8620 steel with a QPQ (Quench Polish Quench) nitride coated black finish. This BCG features shrouded forward-facing gas ports that allows the system to run with a smoother energy pulse. The tail of the carrier has a flared boss helping improve the lock position with the upper and increasing accuracy.
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3 days ago , by Dealer
NBS Nickel Boron Bolt Carrier Group for .223/5.56/300BLK Carrier M16 style (Auto) Machined from 8620 tool steel Heat treated to mil spec Bolt Machined from 9310 tool steel Heat treated to military specifications Shot Peened MPI (Mag Particle Inspected) Gas Key Machined from 17-4 Stainless Steel Heat treated to mil spec Extractor Machined from S-7 shock resisting tool steel Heat treated to mil spec Shot peened Extractor spring is made of stainless steel music wire Firing Pin Machined from 17-4 stainless steel Heat treated to milspec Specifications Weight: 11.6 oz
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4 days ago , by Dealer
Product Specs: .233/5.56 NATO Salt bath nitride finish M16 cut 9310 steel carrier Carpenter 158 steel bolt 4140 steel extractor MIL-SPEC O-ring MIL-SPEC gas rings 4140 steel cam pin 8740 steel firing pin with hard chrome finish Magnetic particle inspected Proudly made in the U.S.A.
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4 days ago , by Dealer
Complete Nickel Boron Bolt Carrier Group 5.56 / .223 / 300AAC MUST USE CODE (((PROMO CODE - NB30 $30.00 off each BCG)))) PRODUCT DESCRIPTION -Magnetic Particle Inspected -Shot Peened -Fully Assembled -Heat Treated Finish: Bolt - Nickle Boron Material: Bolt - 9310 Steel Carrier - Nickle Boron Plated Carrier Style: M-16 Gas Key: Staked
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5 days ago
SKU KIT-0423 Toolcraft 5.56 Phosphate MI Full-Auto BCG w/o Logo SKU: 5655103990 QTY: 1 PMC X-TAC 62gr LAP 5.56 Ammo, 20rds SKU: 4793 QTY: 10 FEATURES Toolcraft 5.56 Phosphate MPI Full-Auto BCG w/o Logo This Toolcraft Bolt is made of Mil-spec Carpenter 158 steel, shot peened, and mag particle inspected. Gas key is chrome lined, phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Full-auto bolt carrier is phosphate coated and chrome lined. Made in the USA. Mil-Spec Carpenter No. 158® Steel Bolt Shot Peened; Mag Particle Inspected
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6 days ago
Description Right here is a True Mil-Spec BCG. Each and every bolt, test fired from the factory. This unit is for builders who prefer tried and true manufacturing and aggressive quality assurance testing over fancy coatings, proprietary profiles and laser engraved logos. AO Precision has provided BCGs to large military contractors such as FN America and large commercial retailers who re-brand and sell these at a considerable mark-up. You can now get these directly from AR15Discounts.com and save big! Bolt - Machined from Carpenter Technology No. 158 alloy. - Heat treated
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1 week ago , by Dealer
Mercury Precision "Pulsar" AR-15 9mm Nitride Bolt Carrier Group - $85.49 w/Coupon Code 'gundealsoctober' at Checkout Use 'gundealsoctober' at checkout to get 5% off your Entire Order - Valid Through The Month Of October Cannot Be Combined With Any Other Promotion Or Coupon Code If you like what you see, please don't hesitate to hit that "thumbs up" on the post Thanks! - Delta Team Tactical Sign Up for our Newsletter and receive an additional COUPON CODE for another purchase
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1 week ago , by Dealer
The Dirty Bird Enhanced Bolt Carrier Group for .223/5.56 features a unique carrier design with practical improvements in two key areas: Strategically relocated load bearing surfaces reduce carrier tilt/can’t during recoil, thus increasing reliability and longevity. Additional wall thickness in the gas exhaust port area for added strength and rigidity.
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1 week ago
Complete Black Nitride / Melonite Bolt Carrier Group for Ar15. Smooth & Protective Nitride coating.  This is for 1 BCG and 1 Charging Handle.  5.56/223 & 300 Blackout BCG  - M16 Carrier-8620 steel - Bolt-9310 steel - MPI Tested  - Shot Peened - Upgraded Extractor Spring with o-ring - Properly staked gas key  Choose Red or black Charging handle with extended latch Made in the USA Note: may have blems.  We do fully inspect the bcgs, check headspace with a good barrel, and test fire many from the batch to verify quality.. you may notice brass marks from test firing on some.     
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1 week ago
WMD Guns Bolt Carrier Group, Without Hammer, Nib-X Finish, .308, DPMS Compatible Style, 9130 Bolt, 8620 Carrier w/Properly Staked Key NIBXBCG308 Manufacturer Wm Display Guns UPC 855899003331 SKU NIBXBCG308 Width 5.0000 Length 10.0000 Height 1.4000 Weight 1.1500 Color Nib-X Description Carrier Group without Hammer Finish/color Nib-X Type Bolt Carrier Group Item: WMDNIBXBCG308
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1 week ago , by Dealer
8620 Steel Bolt Carrier 9310 Bolt MPI (Magnetic Particle Inspected) Hydraulically Staked CL Key Grade 8 Screws to Mil-spec USA Made Rainbow PVD (Physical Vapor Deposition) Finish On Bolt Carrier Nitride Finish On Bolt, Firing Pin Retainer, Staked Screws & CAM Pin Aesthetic Coating Which Improves Durability & Lubricity 1 Year Warranty Just Released!
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1 week ago
Description Right here is a True Mil-Spec BCG. This unit is for builders who prefer tried and true manufacturing and aggressive quality assurance testing over fancy coatings, proprietary profiles and laser engraved logos. Bolt - Machined from Carpenter Technology No. 158 alloy. - Heat treated - Shot peened per ASTM B851/SAE AMS2430S - Individually High Pressure Tested (test fired) - Individually Magnetic Particle Inspected - Manganese Phosphate Finish Extractor - Tool Steel Extractor - Black Nitride Finish - Mil-Spec O-Ring Carrier
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1 week ago
SKU 516446953 Brand Palmetto State Armory Model Number 516446953 UPC 516446953 DETAILS Manufacturer: Palmetto State Armory Platform: AR-15 Bolt Finish: Nitride Bolt Steel: 9310 Profile: Full Auto Profile Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec FEATURES PSA 5.56 nitride MPI full-auto bolt carrier group. Bolt is Magnetic Particle Inspected (MPI). 8620 Full-auto profile bolt carrier group with 9310 steel bolt. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. UPC#: 000516446953
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1 week ago
Description Bootleg Inc is proud to offer their Bolt completion kit. Great as a replacement or a spare this bolt completion kit will allow you to finish out your Bolt Carrier in order to turn the carrier into a complete group. This particular version of the completion kit features a phosphate finish bolt. Features and Specifications: Manufacturer Number:BP-ABC-P .223 REM/5.56 NATO/.300 AAC BLACKOUT Phosphate Finish on Bolt Great as a spare or replacement Matte Black Includes: 5.56 NATO Phosphate Complete Bolt Cam Pin Firing Pin Firing Pin retaining pin
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1 week ago
Manufacturer’sDescriptionThe ODIN Works 9mm BCG is designed to work with both Colt and Glock style lowers and magazines. It also features the traditional style AR extractor that will give you long and reliable use.Technical Specs:Works with Glock and Colt lowers and magazinesCarrier machined from 8620 Steel MaterialFully Heat TreatedExternal M-16 Style Extractor, much more durable than 1911 styleFull auto compatibleBlack NitrideDust Cover CompatibleWeight: 14.9 OuncesRemovable Carrier Weight - Compatible with JP Enterprises and similar buffer systems. SKU#: 2269
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1 week ago
Description This lightweight bolt carrier group from Bootleg might be the perfect choice for an upgrade or new build. The carrier is machined from 4140 tool steel and has a black nitride coating for durability. The bolt is mil-spec configuration for 5.56 NATO. The gas key is properly staked per mil-spec. Bootleg was formed as a sister company of Primary Weapons Systems and specializes in direct impingement firearms accessories and builder education. Features and Specifications: Manufacturer Number:BP-C15-BCG .223 REM/5.56 NATO/.300 AAC BLACKOUT 4140 tool steel
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2 weeks ago
Description - 9310 Steel - Standard Charging - Includes Bolt, Bolt Carrier, Extractor Pin, Firing Pin, Cam Pin - Staked Gas Key - .458 and .450 Caliber - Black Nitride Finish Carrier - Parkerized Finish Bolt MPN#: BCG-15-450-00-001
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2 weeks ago
The Expo Arms Bolt Carrier Group is a great choice for any build. This drop-in AR-15 BCG features a tough manganese phosphate finish, MIL-SPEC dimensions, and a magnetic particle inspected carpenter 158 steel bolt. Crafted from domestically sourced 8620 steel, the M16 cut carrier includes a gas key fastened by properly staked grade 8 screws. Made in the U.S.A. and covered by a lifetime warranty, you can count on this BCG for a lifetime of service. Features: - .233/5.56 NATO - Hard chromed bore and gas key - Manganese Phosphate finish - M16 cut - Aircraft quality 8620 steel carrier
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2 weeks ago
Use the coupons below this post to get the lowest prices!
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2 weeks ago
RTB Complete M16 Bolt Carrier Group - NICKEL BORON with 2 FREE Magpul 30 / 10 Round PMAGs1x NICKEL BORON BOLT CARRIER GROUP - 9310 - MPI M16 BCG (5.56) - POLISHEDOur Nickel Boron Bolt Carrier Group is specifically coated to allow your rifle to operate smoothly, be easily maintained, and work longer without being cleaned. We offer a 100% money back guarantee.
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2 weeks ago
Feature rich, high-quality, and affordable, Foxtrot Mike Products offer cutting edge solutions utilizing the highest quality materials and manufacturing processes available. This Premium .45 ACP Bolt Carrier Assembly is compatible with all GLOCK style AR builds. Maintaining a harder core than standard 8620 steel, this carrier is machined from 8620H. OD ground prior to machining in a pre-hardened state for improved tolerances post machining and coating. A long duration salt bath nitride finish is applied for a long service life and superior corrosion resistance. Features:
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2 weeks ago
Description JP EnhancedBolt™ Assembly Completion Group Caliber: .223/5.56 Finish: Black DLC Kit includes bolt assembly, firing pin, cam pin and retainer pin. This version of the bolt is compatible with any AR-15 platform using a Mil-spec bolt carrier and sub-components. Weight 0.0000 oz MPN JPBC-EB223 SKU: 3761
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2 weeks ago
Description The Dirty Bird Industries Nickel Boron Bolt Carrier Group is a substantial upgrade from a standard BGC. Its NiB coating reduces friction on sliding surfaces and prevents carbon build-up making cleaning a much easier task. The NiB coating offers great heat dissipation, allowing reduced wear on the BCG and interacting parts, to further prolong the lifespan of the unit. MIL-SPEC dimensions ensure correct component function and reliability. Features: - Machined from 8620 tool steel (carrier) and 9310 carpenter steel (bolt) - Forward assist serrations - Shrouded firing pin
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2 weeks ago
The Dirty Bird Enhanced Bolt Carrier Group for .223/5.56 features a unique carrier design with practical improvements in two key areas: Strategically relocated load bearing surfaces reduce carrier tilt/can’t during recoil, thus increasing reliability and longevity. Additional wall thickness in the gas exhaust port area for added strength and rigidity.
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2 weeks ago
MPN#: APRH100185C Our upgraded .308/7.62 Nickel Boron BCG is an eye catching addition to your AR build. Exacting dimensions and superior coating ensure the highest quality and correct component interface. Features: No Aero 'A' Logo Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) Nickel Boron coated Bolt is machined from 9310 steel MPI Forward Assist serrations Weight: 17.92oz BCG Includes: Bolt carrier Complete bolt Firing pin Cam pin Retaining pin Compatible with LR-308, SR25 and DPMS Pattern SPECS Specs Made In America? Yes Platform M5
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2 weeks ago
This BCG is perfect for shooters looking for a tactical advantage resulting from the non-reflective properties.
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2 weeks ago
This M16 Bolt Carrier Group drops right into your M16, AR15 or M4 platform rifle. We source our components from manufacturers that meet or exceed Military Specifications. All parts are machined and properly heat treated to Mil-Spec followed by complete Nickel Boron coating with UCT’s Exclusive EXO Technology.
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2 weeks ago
Description Complete Bolt carrier group, Machined from S7 Tool Steel, Lithium Isonite Coating, 4 Setting Adjustable Vent System relieves excess gas pressure created from suppressor use creating longer dwell time and less blowback to the shooter. Gas Adjustment can be turned while installed in the rifle, Uses all standard Mil- Spec components Staked Mil Spec Gas Key, Adjustment Pin is easily removed for cleaning Full Auto Rated Weight 11.40 oz Weight 0.0000 oz Bolt Finish Lithium Isonite Bolt Material 9310 Steel Cartridge Compatibility .223/5.56 NATO/.300 BLK Finish
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2 weeks ago
M16/AR15 Bolt - 9310 MPI (5.56) - Completion Kit - Black NitrideThis is a complete bolt completion kit finished in Black Nitride. This Kit comes with everything you need to complete your Bolt Carrier Group other than the Carrier itself. These are perfect kits to keep as a spare or backup for your BCG.Our M16 / AR bolt completion kit comes with everything you'll need to finish your rifle's AR15, M4 or M16 Carrier.
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2 weeks ago
The Lantac Mil-Spec 5.56 Bolt Carrier Group is made to be affordable while still being made from high quality materials with select enhanced parts like the domed cam pin that reduces friction in the upper receiver and decreases parts wear. The bolt face is made from 158 carpenter steel or 9310 depending on supply, shot peened, and magnetic particle inspected. The carrier is cut to full auto M16 dimensions and is machined from 8620 steel and ground to exact Mil-Spec dimensions.
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2 weeks ago , by Dealer
Arm or Ally is one the largest Aero Precision dealers and check out our stock of Aero Bolt Carrier Groups. It you can add it to your cart, it will ship quickly from our warehouse. Please check out all our other DEALS: ARM OR ALLY GUN DEALS click the link above.
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3 weeks ago
Complete bolt/carrier assembly comes ready to drop in your rifle—ideal as a replacement, in a custom build, or as a backup for extra insurance during competition. Machined from high-grade 8620 carbon steel to mil-spec dimensions, with hard-chrome plated steel firing pin and chrome-lined, staked gas key for added durability. Carrier is notched for forward assist. Magnetic particle inspection (MPI) during manufacture ensures each component is solid and free of internal flaws.Available with a parkerized mil-spec finish or chrome plated Caliber: 22 Caliber (.223-.224) Finish: Matte Black
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3 weeks ago
The Battle Arms Development Bolt Carrier Group features an M16 cut profile which is heavier than an AR-15 cut profile to prevent bolt bounce and slow down the cyclic rate for a more controllable and reliable rifle. The 5.56 bolt is machined from 9310 steel, case hardened, and then shot peened to increase durability and ensure that it will survive thousands of rounds of high-pressure military surplus ammunition. An important component of an AR-15 BCG that is often overlooked is the cam pin.
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3 weeks ago
DETAILS PSA Nitride MPI Full-AUTO 5.56 BCG SKU: 516446953 QTY: 1 Magpul PMAG 30rd Gen2 MOE 5.56 Magazines SKU: 2 QTY: 10 FEATURES PSA Nitride MPI Full-AUTO 5.56 Bolt Carrier Group PSA 5.56 nitride MPI full-auto bolt carrier group. Bolt is Magnetic Particle Inspected (MPI). 8620 Full-auto profile bolt carrier group with 9310 steel bolt. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. Manufacturer: Palmetto State Armory Platform: AR-15 Bolt Finish: Nitride Bolt Steel: 9310 Profile: Full Auto Profile
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3 weeks ago
This Aero Precision 5.56 Complete Bolt Carrier Group is coated inside and out with Nickel Boron for smooth action and an eye catching aesthetic. These Bolt Carrier Groups from Aero Precision are shot peened and Magnetic Particle Inspected so you can count on their durability. The highly machined finish of these affordable Aero Precision Complete AR15 BCGs makes them easier to clean because it's easier to see fouling or residue from cleaning agents. Upgrade your AR15 with the Aero Precision 5.56 Mil-Spec Bolt Carrier Group.
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3 weeks ago
078-000-392WB 308AR Bolt Carrier Group 308 Win Nickel Boron MP Cartridge: 308 Winchester Finish: Nickel-Boron The Ideal Big-Bore Bolt Carrier Group The Brownells Complete .308 Bolt Carrier Group is designed to operate reliably in DPMS LR-308 pattern rifles chambered in .308, .243, 7mm-08, .338 Federal, .260 Remington, 6.5mm Creedmoor, or any other cartridge based on the .308 Winchester. These BCGs are manufactured to the same uncompromising standards as our M16-style BCGs.
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Brownells 4038
3 weeks ago
The Ideal Big-Bore Bolt Carrier Group The Brownells Complete .308 Bolt Carrier Group is designed to operate in all AR-10-pattern guns, allowing for a simple drop-in component to complete any .308 Win.-caliber upper. The Brownells Complete .308 Bolt Carrier Group is constructed using a bolt machined from 9310 steel, which is finished with a heat treatment and shot peening. The carrier itself is fabricated from hardened 8620 steel. - Each BCG is quality-checked with magnetic particle inspection - Extractor is installed with rubber insert and spring
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Brownells 2676
3 weeks ago
078-000-717WB M16 BCG 5.56x45mm Nitride MP & 10 30-RD Magazines Item Details Cartridge: 5.56 mm NATO Finish: Black Nitride Made in the USA Restriction High Cap Mags Domestic Sales - Please check with your state regulations for ownership of High Capacity magazines. High-capacity magazine restriction High-capacity magazine restriction 30 rounds. Make Model Make: AR-15 Reliability for the Discerning Operator
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3 weeks ago
Custom Deal Ammunition Storage Components, Magazine, 308 Win, 20Rd  + Davidson Defense .308 LR-308 BCG, Nickel Boron  Ammunition Storage Components, Magazine, 308 Win, 20Rd
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