Uppers Gun Parts

(3,563 deals total)

This BCA AR-15 complete 5.56 NATO rifle length upper has a 24" heavy barrel with a 416R Stainless Steel finish with spiral flutes, and features a 1:8 twist rate, with a rifle length gas system. It includes the new 15" MLOK rail, an M4 flat-top forged upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This 5.56 NATO upper is compatible with any mil-spec AR-15 lower.  More Information SKU 8984N-UA556RHB2418SSSF-15M3 Weight (lbs) 7.000000 Magazine Capacity N/A Barrel Length 24 Profile Heavy Barrel Twist 1:8 Barrel Finish Stainless Steel

SKU 51655134504 Brand Palmetto State Armory Model Number 51655134504 UPC 51655134504 DETAILS 16" Barrel Length M4 Profile 5.56 NATO Chamber 1 in 7" twist 4150V Chrome Moly Vanadium Steel Barrel, NItride Finish Carbine-length Gas System PSA Classic Carbine Handguards, Flat Dark Earth No BCG or Charging Handle FEATURES

This Bear Creek Arsenal AR-15 Complete 7.62x39 rifle length upper has a 16" heavy barrel with a parkerized finish, and features a 1:10 twist rate, with a Carbine length gas system. It includes a 15 1/4" MLOK rail, a M4 flat-top billet upper receiver, a BCA Bolt Carrier Group, Flash Hider, and a right-side charging (Gen2) handle (patent protected). This 7.62x39 upper is compatible with any mil-spec AR-15 lower. This has the new handguard and a spiral flash hider. More Information SKU 911N-UASCH762CHB16110P-15M3 Weight (lbs) 5.800000 Magazine Capacity N/A Length 16 Profile Heavy Barrel

This BCA AR-15 complete 300 Blackout pistol length upper has a 8.5" heavy contour barrel with a parkerized finish, and features a 1:8 twist rate, with a pistol length gas system. It includes the new 6.5" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 300 Blackout upper is compatible with any mil-spec AR-15 lower. SKU 271N-UASCH300PHB8.518P-7M3 Weight (lbs) 3.800000 Magazine Capacity N/A Length 8.5 Profile Heavy Barrel Twist 1:8 Finish Parkerized

SKU 51655155236 Brand Palmetto State Armory DETAILS Barrel Length: 16" Gas System: Mid-length Barrel Profile: A2 Barrel Steel: 4150V Chrome Moly Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4 Diameter at Gas Block: .750" Gas Block Type: Low-profile Muzzle Device: A2 Style Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 13.5" Hex Full Picatinny M-Lok Rail Bolt Carrier Group Included: No Charging Handle included: No Overall Length: 24.5" FEATURES

SKU 51655112359 Brand Palmetto State Armory Model Number 51655112359 UPC 51655112359 DETAILS Barrel Length: 16" Gas System: Mid-length Barrel Profile: Pencil Barrel Steel: 4150V Chrome Moly Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4 Diameter at Gas Block: .625" Gas Block Type: Low-profile Muzzle Device: A2 Style Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 15" Lightweight M-Lok Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158

Description Finally get a quality, true-to-form reproduction M16A1 Upper Receiver for a fraction of the cost. These are machined from 7075-T6 forgings specifically designed to have the correct proportions and profile of the original M16A1 Upper Receiver. Machine work is performed by true craftsmen with careful attention to detail. These uppers are finished with Mil-Spec type 3 hard anodizing which has the best likelihood of matching most mil-spec forged lower receivers.

Discover the pinnacle of tactical performance with AO Precision's True Mil-Spec M4 Flattop Upper Receiver. Designed for unparalleled compatibility and reliability, this upper receiver is the ideal choice for custom AR-15 builds. FEATURES Mil-Spec 7075 T6 Aluminum: Crafted from durable 7075 T6 aircraft-grade aluminum for superior strength and lightweight handling. True Mil-Spec Dimensions: Precision machined to ensure a perfect fit with all mil-spec lower receivers and parts.

This Complete 16 inch M-LOK upper receiver comes with an Always Armed slant cut 15 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and the bolt is made of all stainless steel construction and we use an anti-jamb dedicated 22 charging handle. Barrel: LENGTH - 16" TWIST RATE - 1/16 TWIST Chamber: 22 Long Rifle PROFILE - Pencil 11-Degree Target Crown - Further improve accuracy Material and Finish - 4140 CrMo, Salt Bath Nitride Finish MUZZLE - 1/2X28 TPI GAS SYSTEM LENGTH - None

ASSEMBLED M4 UPPER RECEIVER WITH PORT DOOR AND FORWARD ASSIST - CHOOSE COLOR This M4 Mil-Spec Upper Receiver comes with the port door and forward assist. These AR-15 uppers are precision machined from industry leading 7075 T6 aircraft grade aluminum forgings and they come with the upper completion kit already installed! M4 feedramps Machined from a Mil-Spec 7075 T6 forging Type III Hardcoat Anodized finish Includes port door and forward assist 100% Made in USA SKU: M4-ASMBLE-U-MTO

Builder's Grade Complete 9" .22LR LUpper Receiver | A2 | 7" M-LOK | With Bolt Carrier Group and Charging Handle This Complete 9 inch M-LOK upper receiver comes with a 7 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and the bolt is made of all stainless steel construction and we use an anti-jamb dedicated 22 charging handle. Barrel Specifications Caliber 22LR Length 9" Material 4150 Chrome Moly Vanadium Profile Medium Taper Finish SBN Dimpled?

Sons of Liberty Gun Works and Aaron Cowan of Sage Dynamics teamed up to build a hard use AR pistol ready to handle whatever comes its way, and now Brownells has teamed up with SOLGW to offer the upper receiver as a stand alone part to go on the AR-15 SBR or Pistol lower of your choice.

This precision Ar15 upper comes assembled and ready to drop on your mil spec lower. 18" 416r Stainless Fluted barrel - HBAR Profile .223 Wylde chamber (shoots both 5.56/.223) 1 in 8 twist. m4 feedramps Mid-Length gas system, .750 gas block 7075-T6 Mil-Spec Aluminum Receiver Dust cover, Forward Assist 12" Free Float Hybrid Slim Keymod Rail M16 Bcg and Charging Handle Available, select from menu Item #: 18spiralhybrid

SKU: 3524 The NBS AR-9 Billet Upper Receiver is a quality, American made billet upper designed to be used on Pistol Caliber Carbine (PCC) builds. Most often PCC builds are either 9mm or .45 ACP. This billet upper features a unique design that sets it apart from traditional forged upper receivers. Manufactured to exacting standards on five axis CNC machines from a solid block of aircraft grade aluminum, this stripped upper not only looks good… it is built to last. No Feedramps Compatible with mil-spec forged lower receivers and most billet lower receivers .250 takedown / pivot pin holes

Looking for a top quality Upper Receiver at wholesale prices? Building off of our Best-Selling, 5-Star Rated, NBS Stripped Upper Receiver, the NBS AR-15 Assembled Upper is machined by one of the foremost manufacturers of mil-spec AR-15 components, and then has a Mil-Spec Upper Parts Kit installed, right in America. Normally these assembled uppers are only available to builders when purchased from a name brand at a substantial markup, but we’re making these available at wholesale prices. What makes this upper different from other “Mil-Spec” upper receivers?

Looking for a top quality Upper Receiver at wholesale prices? The NBS AR-15 Stripped Upper machined by one of the foremost manufacturers of mil-spec AR-15 components in America. Normally these stripped uppers are only available to builders when purchased from a name brand at a substantial markup, but we’re making these available at wholesale prices. What makes this upper different from other “Mil-Spec” upper receivers? Machined from top tier forgings.

15% off Upper Receivers w/Code: UPPERCUT15

This BCA AR-10 complete 8.6 Blackout rifle length upper has a 16" parkerized SOCOM barrel, and features a 1:3 twist rate, with a carbine length gas system. It includes a 15" MLOK split rail, an M4 flat-top billet upper receiver, a BCA AR10 bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 8.6 Blackout upper is compatible with 1st gen DPMS low profile lowers. More Information SKU 8961N-UASCH8.6CSC1613P-15MSR Weight (lbs) 6.250000 Magazine Capacity N/A Barrel Length 16 Profile SOCOM Twist 1:3 Barrel Finish Parkerized

This complete upper receiver features the same tried-and-true construction and aesthetics as our M4E1 Threaded Upper Receivers, without provisions for a forward assist. INCLUDES: M4E1 Enhanced Assembled Upper Receiver 16" 5.56 Mid-Length Gov Barrel Low Profile Gas Block and Mid Length Gas Tube Product comes assembled This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab M4E1 UPPER FEATURES: Forged from 7075 T6 aluminum Precision machined to M4E1 specs M4 feedramps

This Complete Upper includes our Slimline 15 Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail. INCLUDES: M4E1 Threaded Assembled Upper Receiver with no Forward Assist Slimline Handguard 16" 5.56 HBAR Barrel Low Profile Gas Block and Mid-Length Gas Tube Product comes assembled This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab M4E1 UPPER WITH NO FORWARD ASSIST FEATURES:

This Complete Upper includes our Slimline 15 Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail. INCLUDES: M4E1 Enhanced Assembled Upper Receiver Enhanced Handguard of choice 14.7" 5.56 CMV Barrel Low Profile Gas Block and Mid Pencil Length Gas Tube Product comes assembled This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab

Davidson Defense "9mm Lightshow - Black" AR-15 Rifle Featuring Davidson Defense Upper 9MM 16" 4150 CMV Nitride 1:10T 15" M-Lok Guntec Free Float Handguard Upper Build Kit (Assembled or Parts Kit) Caliber: 9mm / 9x19 The 9mm caliber is one of the most widely used calibers. It's adaptable, has a low recoil, and can be used in a variety of situations. It's an extremely popular self-defense, range, handgun, and pistol caliber carbine (PCC) round. Your rifle will look good, feel good, and recoil will be manageable with this 9mm Rifle Upper Build Kit. Barrel:

SKU 51655156158 Brand Palmetto State Armory DETAILS Barrel Length: 7" Barrel Profile: Heavy Gas System: Pistol-Length Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 5/8 x 24 Chamber: 300 Blackout Twist Rate: 1/8 Barrel Extension: M4 Diameter at Gas Block: .750" Gas Block Type: Low-Profile Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Aluminum Receiver Type: M4 Handguard Type: PSA 6" Lightweight Hex Full Picatinny M-Lok Free Float Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158

Description An affordable pistol upper assembly without cutting corners. This means using a nitrided steel gas block from an American Manufacturer as opposed to aluminum and quality American Made handguards, paired with a 7.5″ Nitride treated barrel chambered in 5.56 NATO. This also means taking the time to ensure that the upper will function reliably. We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the properly torqued barrel nut and muzzle device.

Guntec USA GT-UPPER-GOLD AR-15 Stripped Billet Upper Receiver (Anodized Gold) Product Description US Made In Scottsdale, Arizona 1913 Picatinny Rail Flat Top M4 Feed Ramp Accepts Mil-Spec Ejection Port Door Kit And Forward Assist Kit (Not Included) .223 / 5.56 Cal Manufactured From Solid Block Of Billet Aluminum T6 6061 Billet Will Match Up With Any Brand Lower Receiver Slim Profile Shell Deflector SKU: GT-UPPER-GOLD UPC: 709016732553

AR-10 .308 20" stainless steel diamond fluted tactical upper assembly / hbar / mlokAR-10 .308 20" stainless steel hbar diamond fluted tactical upper assembly - made exclusively by Moriarti Armaments. Current ETA: 2-4 weeksBarrel - 20" 416 stainless steel hbar/heavy contour barrel. Hardened to 26-32 rc and stress relived.  Chambered in .308 WIN. 1-10 rh twist button rifled. .750 diameter under gas block. Threaded 5/8-24. X-treme muzzle brake installed. Diamond fluted. A3 flat top upper receiver - made from solid billet 6000 series aluminum. Black hardcoat anodized.

This complete upper receiver features the same tried-and-true construction and aesthetics as our M4E1 Threaded Upper Receivers, without provisions for a forward assist.The slimline line of handguards have a unique milling profile, designed to maximize grip ergonomics and minimize weight while still providing plenty of real-estate to accommodate any attachment needs the end user may have.

This BCA AR-15 complete 300 Blackout pistol length upper has a 10.5" heavy barrel with a parkerized finish, and features a 1:8 twist rate, with a pistol length gas system. It includes a 9.5" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 300 Blackout upper is compatible with any mil-spec AR-15 lower. More Information SKU 528N-UASCH300PHB10.518P-10M3 Weight (lbs) 4.000000 Magazine Capacity N/A Length 10.5 Profile Heavy Barrel Twist 1:8 Finish Parkerized

ODIN Works is an innovative group creating and manufacturing high quality AR-15 products and accessories. They bring their experience and knowledge to the consumer through progressive design and technology. When accuracy, perfection, and reliability matter, ODIN Works Billet Upper will give you a distinct advantage. Machined out of 7075-T6 billet aluminum. With its sleek, weight saving design that casts aside the forward assist in favor of a slick side, and low profile brass deflector, it’s guaranteed to help you stand out in a crowd. Features: 7075-T6 billet aluminum

100-041-773WB Enhanced FM9 4in Upper Cartridge: 9 mm Luger Finish: Black Style: Complete Contour: Medium Length: 4" Twist: 1-10 Description Specs Enhanced 9mm Pistol Upper Receivers with Set of MLOK Covers!

SKU 507819 Brand Palmetto State Armory Model Number 507819 UPC 507819 DETAILS Manufacturer: Palmetto State Armory Product Line: Classic Platform: AR-15 Gas System: Carbine Barrel Length: 16" Caliber: 5.56/.223 Furniture: Classic Finish: Black FEATURES PSA 16" carbine length 5.56 NATO 1:7 M4 nitride Freedom upper, no BCG or CH Includes: 16" Barrel Length Melonite Finish 5.56 Nato Chamber 1 in 7" twist rate Carbine Gas System M4 Feed ramps F-Marked Front sight post A2 Flash Hider Sling Loop Standard Hand Guards w/ heat shields Forged Upper Receiver

Weight 69.76 oz Barrel Finish Nitride / Melonite Barrel Profile Government / SOCOM Gas System Length Midlength Barrel Length 16" Cartridge Compatibility 5.56 NATO Twist Rate 1-7 BCG / Charging Handle Included MPN APAR505731 UPC APAR505731 SKU: 7160

This Dirty Bird Industries Complete Upper features a Black Nitride 16″” Sub-MOA Government Profile barrel chambered in 5.56 with a 1:7 twist. Built on a top-tier t-marked Forged Upper Receiver and finished with Dirty Bird’s 15″” SMRS M-LOK Handguard available in several color options. No corners are cut when manufacturing these complete uppers. All barrels are dimpled and cold blued, use a black nitride 4140 steel gas block and a stainless steel gas tube.

Finish : Anodized Barrel Length : 14.50 Hand : Right Barrel Contour : Government Color : DDC Item Height (Inches) : 2.250 Item Length (Inches) : 22.000 Cartridge : 5.56x45 NATO Item Weight (lbs) : 5.000 Receiver Style : Stripped Gas System Length : Mid-Length Item Width (Inches) : 2.250 Make Model Fit : AR-15.Universal Material : Aluminum Quantity : 1 Muzzle Threads : 1/2"x28 Twist : 1-7 Brownells sku: 430106318 MPN#: BROWNELLS-M4A1 RIII UPC#: 818773023801

Daniel Defense's MK18 RIII Upper Receiver Group is a perfect start to a custom AR build. It comes equipped with a Cold Hammer Forged Chrome Moly Vanadium Steel barrel, and is topped with a proprietary Daniel Defense Flash suppressor. The upper receiver itself is Mil-Spec and features M4 feed ramps, and the gas system is carbine length. Other features include a 9.5" RIS III rail with a picatinny rail and M-LOK attachment points for unmatched customization. Features:

Note: Does not include bolt carrier group or charging handle.

SKU 51655109441 Brand Palmetto State Armory Model Number 51655109441 DETAILS Barrel Length: 16" Gas System: Carbine-Length Barrel Profile: M4 Barrel Steel: 4150V Chrome Moly Barrel Finish: Phosphate Chrome Lining: none Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4 Diameter at Gas Block: .750" Gas Block Type: F-marked Front Sight Base Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: Magpul MOE Black Handguards Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158

Anderson Manufacturing builds rifles, pistols, and parts utilizing the latest in computerized manufacturing. By keeping manufacturing in house, Anderson can offer quality, American-made products at an affordable price, backed by a limited lifetime warranty. The Anderson Manufacturing AR-15 Upper Receiver Assembly is built to MIL-SPEC. Crafted from a 7075-T6 aluminum forging and machined with M4 feed ramps. The forward assist and ejection port cover have been factory installed. Features: - 7075-T6 aluminum - M4 feed ramps - MIL-SPEC Type III hardcoat anodized black

AR10 / .308 Upper Build Kit | Assembled Upper Receiver - DPMS Pattern + RTB AR-10 M-LOK Free Float Low Profile Handguard - Black - Choose Length PORT DOORS MAY FEATURE MINOR COSMETIC BLEMS. Upper Specs:Looking for a top-quality upper receiver for your DPMS 308 rifle? Look no further than the DPMS 308 Flat Top Upper Receiver Assembled. This receiver is expertly crafted from aircraft grade aluminum and features a low profile flattop that allows for the use of a Detachable Carry Handle. Plus, it comes with an ejection cover assembly for your convenience.

Description

SKU 51655134676 Brand Palmetto State Armory Model Number 51655134676 UPC 51655134676 DETAILS Barrel Length: 16" Gas System: Mid-Length Barrel Profile: A2 Style Barrel Steel: 4150V Barrel Finish: Nitride Black Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low profile Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Hand Guard Type: NEW PSA 15" M-Lok Lightweight Rail FEATURES

Quick Overview free shipping Free Shipping applies to this item only and not the entire order. It is the customer's responsibility to be aware of all applicable laws and regulations regarding the purchase and ownership of uppers with a barrel length of less than 16". Federal NFA regulations are applicable to this item. SKU: 5165449836 UPC: 5165449836 MFR#: 5165449836

SKU 5165449807 Brand Palmetto State Armory Model Number 5165449807 UPC 5165449807 DETAILS PSA 7.5" Pistol-Length 300AAC 1/8 Nitride 9" Lightweight M-Lok MOE EPT SBA3 Pistol - 5165449807 Gas System: Pistol Length Barrel Profile: Heavy Barrel Steel: 4150V Chrome Moly Steel Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 5/8-24 Chamber: 300AAC Blackout Twist Rate: 1 in 7" Barrel Extension: M4 Diameter at Gas Block: .750" Gas Block Type: Low-profile Muzzle Device: Fluted Flash Can Receiver Material: Forged 7075 T6 Aluminum Receiver Type: M4

SKU 51655155044 Brand Palmetto State Armory DETAILS Barrel Length: 16" Gas System: Mid-length Barrel Profile: A2 Barrel Steel: Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low-profile Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 13.5" Hex Full Picatinny M-Lok Free Float Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full Auto

Barrel CoatingBlack Oxide Barrel ContourMedium Barrel Length14.5 Barrel LiningChrome BrandGeissele Automatics Caliber Gauge5.56 NATO ColorFlat Dark Earth FinishHardcoat Anodized Gas System LengthMid-Length Gas System TypeDirect Impingement Handguard14 in M-LOK Rail Muzzle DeviceBare Muzzle Thread Pattern1/2 X 28 Twist Rate1:7

SKU 51655110453 Brand Palmetto State Armory Model Number 51655110453 UPC 51655110453 DETAILS Barrel Length: 7.5" Barrel Profile: Heavy Gas System: Pistol-length Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Phosphate Chrome Lining: No Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low-profile Muzzle Device: PSA Fluted Flash Can Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 10" Lightweight M-Lok Suppressor-Ready Rail; Internal Diameter 1.625"

This Complete Upper includes the Slimline Handguard! INCLUDES: M4E1 THREADED ASSEMBLED UPPER RECEIVER Slimline Handguard 16" 5.56 CMV Gov. Barrel Low Profile Gas Block and Mid Length Gas Tube Product comes assembled This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab M4E1 UPPER WITH NO FORWARD ASSIST FEATURES: No Forward Assist Custom enhanced forging that gives the upper receiver a "billet look" while maintaining the structural integrity of a forged part

Right To Bear Complete 4.5" 9mm Upper Receiver | A2 | 4.5" M-LOK Handguard | Black | With Bolt Carrier Group and Charging Handle This Complete 4.5 inch M-LOK upper receiver comes with a 4.5 inch free-float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel making the action smooth and easy to keep clean. Barrel Specifications Caliber 9mm Length 4.5 Material 4150 Chrome Moly Vanadium Profile Straight Finish QPQ Corrosion Resistant Gas System Length None Gas Block Journal N/A Dimpled?

This BCA AR-15 complete 7.62x39 rifle length upper has a 16" heavy barrel with a parkerized finish, and features a 1:10 twist rate, with a carbine length gas system. It includes a 15" MLOK rail, an M4 flat-top forged upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This 7.62x39 upper is compatible with any mil-spec AR-15 lower. More Information SKU 686N-UA762CHB16110P-15M3 Weight (lbs) 5.800000 Magazine Capacity N/A Length 16 Profile Heavy Barrel Twist 1:10 Finish Parkerized Material 4150 Chrome Moly Vanadium Thread Pitch 5/8 x 24

This BCA AR-15 complete 300 Blackout pistol length upper has a 7.5" heavy barrel with a parkerized finish, and features a 1:8 twist rate, with a pistol length gas system. It includes the new 6.5" MLOK rail, an M4 flat-top 7075 billet aluminum upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This 300 Blackout upper is compatible with any mil-spec AR-15 lower. More Information SKU 935N-UA300PHB7.518PBUR-7M3 Weight (lbs) 3.500000 Magazine Capacity N/A Length 7.5 Profile Heavy Barrel Twist 1:8 Finish Parkerized Material 4150 Chrome Moly Vanadium

Aero Precision APAR700304M68: This complete upper includes Aero Precision's ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

The Radical Firearms 18” .223 Wylde Barreled Upper is a match grade, drop-in solution for your next AR build. Crafted with quality materials and covered by Radical’s lifetime warranty, this better-than-MIL-SPEC upper receiver provides an outstanding solution for any budget. Arrives at your door with the hard work done, just drop in your favorite charging handle, BCG, and sights! Features: - 18" 416R stainless steel barrel - Chambered in .223 Wylde with 1:8 twist rate - 1/2x28 Radical Firearms BMD Muzzle Brake - 15" free float Radical Firearms RPR M-LOK Rail

The Aero Precision M4E1 Threaded AR-15 Upper Receiver stands apart from standard MIL-SPEC upper receivers, featuring an angular machined design. With the same enhanced body profile as the Aero M4E1 Enhanced Upper Receiver, this upper is threaded to accept a standard AR-15 barrel nut. Forged from 7075-T6 aluminum and precision machined to work with all Mil-Spec AR-15 parts. This model removes the forward assist to minimize weight. NOTE: Port door not included. Features: - Picatinny profile blends seamlessly with Aero Enhanced and ATLAS series handguards - M4 Feedramps

SKU 5165448513 Brand Palmetto State Armory Model Number 5165448513 UPC 5165448513 DETAILS PSA 16" MID-LENGTH 5.56 NATO 1:7 NITRIDE 13.5" LIGHTWEIGHT M-LOK UPPER - WITHOUT BCG OR CH - Barrel Length: 16" - Gas System: Mid - Barrel Profile: A2 - Barrel Steel: 4150 Chrome-Moly Vanadium - Barrel Finish: Nitride - Chrome Lining: None - Muzzle Thread: 1/2-28 - Chamber: 5.56 NATO - Twist Rate: 1:7 - Barrel Extension: M4 - Diameter at Gas Block: .750 - Gas Block Type: Low-profile - Muzzle Device: A2 Flash Hider - Receiver Material: Forged 7075 T6 - Receiver Type: M4

This complete upper includes our Slimline Handguard. The slimline line of handguards have a unique milling profile, designed to maximize grip ergonomics and minimize weight while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. NOTE: This product is LEFT-HANDED INCLUDES: AR15 Assembled LEFT HANDED Upper Receiver

RTB Dedicated 22LR SS Bolt Group + RTB 22LR Slick Side Upper Receiver This Right To Bear dedicated 22LR AR kit comes with the following: RTB Dedicated 22 LR Stainless Steel Bolt Group RTB 9mm / 22LR True Slick Side Upper Receiver RTB .22LR products are compatible and interchangeable with CMMG .22LR products Please note: These .22 BCG's are test fired and may have light carbon fouling.

RTB Complete 16" .22LR Lightweight Upper Receiver | A2 | 13.5" M-LOK | With Bolt Carrier Group and Charging Handle This Complete 16 inch M-LOK upper receiver comes with our RTB 13.5 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and the bolt is made of all stainless steel construction and we use an anti-jamb dedicated 22 charging handle. Barrel Specifications Caliber 22LR Length 16" Material 4150 Chrome Moly Vanadium Profile Lightweight Pencil Finish SBN Dimpled?

A quality upper assembly without cutting corners. This means starting with a top tier mil-spec forged upper receiver, using a steel gas block as opposed to aluminum, quality American Made M-LOK handguards (handguard style may vary) and one of the nicest nitrided A2s you’ll find anywhere. This also means taking the time to ensure that the upper will function reliably. We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the properly torqued barrel nut and muzzle device.

Builder's Grade 5.5" 9mm Upper Receiver - Black | FLASH CAN | 7" M-LOK | Without Bolt Carrier Group and Charging Handle This 5.5 inch M-LOK upper receiver comes with a 7 inch free float handguard and is built with only the best Mil-Spec components.

RTB Barreled 10.5" 5.56 Upper Receiver - Black | A2 | 9" M-LOK This Barreled 10.5 inch M-LOK upper receiver comes with our RTB 9 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel. Barrel Specifications Caliber 5.56 Length 10.5" Material 4150 Chrome Moly Vanadium Profile Government Finish QPQ Corrosion Resistant Gas System Length Carbine Gas Block Journal .750" Dimpled?