Uppers Gun Parts

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Matador Arms MAT-9 Blowback Upper Receiver Bufferless – Monolithic – Non-Reciprocating The MAT-9 upper receiver is side-folding compatible and features Matador Arms patent-pending EZTS “Easy Take-down System” with no tools required to break down the upper for maintenance and cleaning. The 9mm upper is machined for maximum weight reduction, slim profile, and compatibility with bolt catches and lower receivers. The upper is also built with a tapered multi-material 4-piece trunnion system to maintain mechanical accuracy and durability.

ALEXANDER UPPER RECEIVER AR15 PISTOL .50 BEOWULF 12" TB BLK Barrel: 12" Twist:1:20 Threading: 49/64-20RH Thread Protector Included Tacstar Carbon Fiber Handguard Standard Charging Handle Direct impingement operating system One 7-round magazine.

CUS16M4 Details: AR15 CUSTOM UPPER 16" 556 PENCIL BFI M4 HANDGUARD Specifications & Features: • Barrel: Bushmaster 5.56NATO 16" M4 pencil barrel with A2 Flash hider. • Chamber: 5.56NATO • Twist Rate: 1:8" • Gas System: Carbine-Length Direct Impingement with Flat Top Gas Block and Bayonet Lug • Handguard: M4 Handguard • Muzzle Device: A2 Flash Hider • Overall Length: 23.5" BOLT CARRIER GROUP OR CHARGING HANDLE IS NOT INCLUDED This item cannot be shipped to California, Connecticut, Maryland, New Jersey, New York, or Washington D.C. 783583554015

Davidson Defense "Black Magic" AR-15 Rifle Featuring Davidson Defense Upper 5.56 NATO 20" 4150 CMV Phosphate 1:7T 17" Keymod Gauntlet Arms Free Float Handguard Upper Build Kit (Assembled or Parts Kit) Caliber: 5.56x45 NATO / .223 Remington

Davidson Defense "9 Ball" AR-15 Pistol Featuring Davidson Defense Upper 9MM 8.3" < > Nitride 1:10T 7" Keymod Gauntlet Arms Free Float Handguard Upper Build Kit (Assembled or Parts Kit) Caliber: 9mm / 9x19

AR-15 EJECTION PORT DUST COVER ASSY / LASERED TRUMP 2024 / ANODIZED BLACKAR-15 Ejection Port Dust Cover AssemblyUS MadeAR-15 .223/300/7.62 COMPIncludes Dust Cover, Rod, Spring, And ClipComplete AssemblyAnodized BlackTRUMP 2024 Engraved MPN#: AR15-DC-TRUMP

Complete your AR-15 build with the high-performance Radical Firearms AR15 Complete Upper in 5.56 NATO. This upper is designed to handle both 5.56 NATO and .223 Rem cartridges, providing versatility for various shooting applications. It features a robust 16-inch SOCOM contour barrel made from 4140 chrome moly vanadium steel with a protective Melonite finish and a 1:7 twist rate for outstanding accuracy and stability. Key Features: Caliber: 5.56 NATO (also accepts .223 Rem) Barrel Length: 16 inches Barrel Material: 4140 Chrome Moly Vanadium Steel

SKU 5165492560 Brand Palmetto State Armory Model Number 5165492560 UPC 5165492560 DETAILS Barrel Length: 10.5" Barrel Profile: A2 Barrel Steel: Chrome Moly Vanadium Barrel Finish: Nitride 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: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: A3 Handguard Type: Lightweight M-Lok 9" Free Float Rail Bolt Carrier Group Included: No Bolt Steel: N/A Bolt Carrier Profile: N/A

SKU 51655155043 Brand Palmetto State Armory DETAILS Barrel Length: 16" Gas System: Pistol Barrel Profile: Heavy Barrel Steel: 4150V Chrome Moly Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 5/8x24" Chamber: 300 Blackout Twist Rate: 1 in 8" 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 FEATURES

Mid State Firearms Ar15 Upper Receiver with lightweight Keymod V15 slim freefloat rail. 16" 416r Stainless m4 Barrel .223 Wylde chamber (shoots both 5.56 and .223) 1:8 Twist 7075-t6 Aluminum mil-spec receiver Dust cover, forward assist 15" slim keymod free float rail a2 flash hider Carbine gas .750 steel gas block Item #: 16upperssv15

Aero Precision complete mil-spec AR-15 upper receiver. Fully assembled, includes M4 feed ramps, installed dust cover, forward assist, and laser engraved T- marks on the top rail. Ready to add a barrel and handguard out of the box, this US made upper receiver requires no additional assembly and is competitively priced. Features: - M4 feedramp already installed - Standard .250 takedown pin holes - Laser engraved T-marks - Dust cover and forward assist already installed Includes: - Fully assembled anodized black AR-15 upper receiver About Aero Precision

Description The Foxtrot Mike Products FM-9 Complete 9mm AR-15 Upper Receiver is built from the ground up to provide outstanding reliability and accuracy with a host of top tier features. The traditional M4 charging handle has been replaced with an ambidextrous, non reciprocating forward charging handle. The monolithic style has been achieved with a proprietary interlock between the upper and handguard. Lastly, the slim-line handguard is M-LOK compatible for your favorite accessories. Features: - Non-reciprocating fixed forward charging handle - Left or right charging

This Bear Creek Arsenal AR-15 12.7x42 Complete upper has a 16" heavy barrel with a 416R stainless steel finish, and features a 1:20 twist, with a carbine length gas system. This 12.7x42 AR-15 also includes a 15" MLOK rail, a forged upper receiver, a BCA AR15 Bolt Carrier Group, Flash Hider, rear charging handle, and will work on a mil-spec AR-15 multicaliber lower. More Information SKU 9072N-UA127X42CHB16120SS-15M3 Weight (lbs) 6.000000 Magazine Capacity N/A Barrel Length 16 Profile Heavy Barrel Twist 1:20 Barrel Finish Stainless Steel Material 416R Stainless Steel

This BCA AR-15 complete .450 Bushmaster rifle length upper has a 16" heavy barrel with a 416R Stainless Steel finish, and features a 1:24 twist rate, with a carbine length gas system. It includes the new 15" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a side charging handle (Gen 2) (Patent Pending). This .450 Bushmaster upper is compatible with any mil-spec AR-15 lower. More Information SKU 9761NUASCH450CHB16124SS87515M3 Weight (lbs) 5.800000 Magazine Capacity N/A Barrel Length 16 Profile Heavy Barrel Twist 1:24

Item #: Start your Ar-15 build with a quality assembled upper receiver. Properly built and ready to go on your rifle. Features: 16″ 4150 CMV 223 Wylde barrel (shoots 556/223) 7075-t6 Aluminum forged milspec receiver, anodized black Carbine Gas, .750 steel gas block, a2 flash hider, 1/2-28 threads Dust cover, forward assist 12″ MLOK lightweight free float handguard ASSEMBLED, TEST-FIRED, AND QC’D IN-HOUSE

Builder's Grade Blemished 14.5" 300 Blackout Upper Receiver | 12" KEYMOD | A2 | With Bolt Carrier Group and Charging Handle This complete upper receiver may be considered a pistol or SBR upper until a long enough muzzle device is permanently attached, providing a 16-inch Overall Length barrel. Looking for a quality AR upper that is versatile, reliable, and affordable?

Want to see ALL of our Gun.Deals Exclusive Prices? CLICK HERE TO CHECK OUT ALL THESE DEALS The Matador Arms Montgo-9 Complete 9mm Upper fits most AR-15/AR-9 Lowers. This upper features a 5.5-inch barrel crafted from 4140 steel with a black nitride finish. The billet aluminum upper receiver is hardcoat anodized to maximize its strength and durability.

NOTE: This part features a colored anodized finish. These finishes are held to different aesthetic standards than parts finished in black anodizing or Cerakote. For more information on colored anodizing visit our Knowledge Center. This Complete Upper includes our Slimline 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 No Forward Assist Upper Receiver 13.5" Slimline Handguard 16" .223 Wylde SPR QPQ Mid-Length Barrel

NOTE: This part features a colored anodized finish. These finishes are held to different aesthetic standards than parts finished in black anodizing or Cerakote. For more information on colored anodizing visit our Knowledge Center. This Complete Upper includes our Slimline 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 No Forward Assist Upper Receiver 13.5" Slimline Handguard 16" 5.56x45mm NATO Carbine Length M4 Barrel

This Complete Upper includes our Slimline 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 No Forward Assist Upper Receiver 13.5" Slimline Handguard 16" 5.56x45mm NATO Carbine Length M4 Barrel .750" Low Profile Gas Block and Carbine 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

The Stag Arms A3 upper receiver assembly is our very first Left-Handed upper receiver, available on ar15discounts.com. It is made to mil-spec standards and includes a picatinny rail on the top, dust cover, and installed forward assist. This Left Handed Upper Receiver is machined from 7075-T6 forgings, hard anodized and includes a factory installed Forward Assist and Dust Cover. Made in the USA ADDITIONAL INFORMATION WEIGHT 0.0000 oz FEED RAMPS M4 FINISHED Anodized Black FORWARD ASSIST Factory Installed PORT DOOR / DUST COVER Factory Installed RECEIVER MATERIAL

SKU 51655155034 Brand Palmetto State Armory DETAILS Barrel Length: 16" Gas System: Midlength 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 Handguard Type: PSA 13.5" Hex Full Picatinny M-Lok Rail Bolt Carrier Group Included: Yes; Nickel Boron Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full-auto

Barrel: 20" 416R stainless steel barrel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a rifle-length gas system. The barrel is finished with a .750" diameter low-profile gas block, PSA 15" Lightweight M-Lok Free Float Rail and an A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feed ramp cuts, these upper receivers are made for us right here in the USA.

AO Precision x Andro Corp Industries Stripped Receiver Set Product Description Combine the superior quality and precision of AO Precision's True Mil-Spec M4 Flattop Upper Receiver with the robust Andro Corp Industries ACI-15 Stripped Lower, Manufactured by AO Precision, to create the ultimate AR-15 build. This set offers unparalleled compatibility and reliability, providing a solid foundation for your custom AR-15 rifle.

This Bear Creek Arsenal AR-15 Complete 5.56 rifle length upper has a 16" M4 with a parkerized finish, and features a 1:7 twist, with a mid-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 rear charging handle. This 5.56 upper is compatible with any mil-spec AR-15 lower. This has the new handguard. More Information SKU 126N-UA556MM41617PBUR-15M3 Weight (lbs) 5.300000 Magazine Capacity N/A Barrel Length 16 Profile M4 Contour Twist 1:7 Barrel Finish Parkerized Material 4150 Chrome Moly Vanadium

This BCA AR-10 complete .308 rifle length upper has a 18" parkerized SOCOM barrel, and features a 1:10 twist rate, with a mid-length gas system. It includes a 15" MLOK split rail, an M4 flat-top forged upper receiver, a BCA AR10 bolt carrier group, a flash hider, and a rear charging handle. This .308 upper is compatible with 1st gen DPMS low profile lowers. More Information SKU 9260N-UA308MSC18110PFUR-15MSR Weight (lbs) 8.000000 Magazine Capacity N/A Barrel Length 18 Profile SOCOM Twist 1:10 Barrel Finish Parkerized Material 4150 Chrome Moly Vanadium Thread Pitch 5/8 x 24

SKU 5165492571 Brand Palmetto State Armory Model Number 5165492571 UPC 5165492571 DETAILS Barrel Length: 10.5" Barrel Profile: A2 Gas System: Carbine-length Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Nitride 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 A2 Flash Hider Receiver Material: Forged 7075 T6 Aluminum Receiver Type: M4 Handguard Type: PSA 9" Lightweight M-Lok Rail Bolt Carrier Group Included: Yes

This BCA AR-10 Complete Upper has a 18" Parkerized heavy barrel, and features a 1:8 Twist Rate, a Rifle length gas system. It includes a 15" MLOK Split Rail, an M4 flat-top billet upper receiver, a BCA Bolt Carrier Group, a Flash Hider, and a rear Charging Handle. It is chambered in 6.5 Creedmoor. This Slick Side has no forward assist or dust cover. This upper features the new handguard. This 6.5 Creedmoor upper is compatible with 1st gen DPMS low profile lowers. More Information SKU 685N-UASP65CRHB1818P-15MSR Weight (lbs) 6.500000 Magazine Capacity N/A Barrel Length 18

This BCA AR-15 complete 5.56 Nato rifle length upper has a 22" heavy contour barrel with a 416R stainless steel finish with straight 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 billet upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging (Gen2) handle (patent protected). This 5.56 Nato upper is compatible with any mil-spec AR-15 lower. More Information SKU 8977N-UASCH556RHB2218SSF-15M3 Weight (lbs) 7.750000 Magazine Capacity N/A Barrel Length 22 Profile Heavy Barrel Twist 1:8

This BCA AR-15 Complete 350 Legend rifle length Upper has a 16" M4 Contour barrel with a Parkerized finish, and features a 1:16 Twist Rate, with a Carbine length gas system. It includes a 15 1/4" MLOK Rail, an M4 flat-top forged upper receiver, a BCA Bolt Carrier Group, a Flash Hider, and a rear charging handle. This 350 Legend upper is compatible with any mil-spec AR-15 lower. This has the new handguard. More Information SKU 513N-UA350LCM416116P-15M3 Weight (lbs) 5.300000 Magazine Capacity N/A Length 16 Profile M4 Contour Twist 1:16 Finish Parkerized

Product #: 867415 Manufacturer #: 608N-UA556MM41617M-15M3 The AR-STONER AR-15 Upper Receiver provides style, function, affordability to your AR-15 Pistol. The A3 upper attaches to virtually any standard AR-15 lower receiver. Machined with M4 feed ramps, this upper features an ultralight handguard and 4150 Chrome Moly Vanadium barrel with a matte finish to top it off. M-Lok Handguard slots allow mounting of popular M-Lok compatible accessories directly to precision cutouts and features integrated QD sling mounts with a sleek design that does not sacrifice strength or ergonomics. Features

SKU 5165448205 Brand Palmetto State Armory Model Number 5165448205 UPC 5165448205 DETAILS Barrel Length: 16" Gas System: Mid-length Barrel Profile: A2 Style Barrel Steel: 416R Barrel Finish: Stainless Steel Chrome Lining: No 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 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Hand guard Type: PSA 13.5" Lightweight M-lok Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158

Quality built Ar15 Upper featuring a great combination of excellent components. Featuring a Charging Handle, Rail, and Muzzle Device by Breek Arms. Includes the perfect length rail for 14.5 inch barrels! Features: - 14.5″ 4150 Chrome Moly Vanadium Steel barrel, (Shoots 5.56 / 223 wylde) - Pinned & Welded for legal 16″ Rifle length - Breek Arms muzzle device, compatible with blash shield and 13/16-16 threads. - 13.7″ RG2 Mlok aluminum handguard with wedge lock system, anodized black. - 7075-t6 Mil Spec Aluminum a4 Receiver, Anodized black - M4 Feed Ramps

This BCA AR-15 complete 5.56 Nato pistol length upper has a 10.5" M4 contour barrel with a 416R Stainless Steel finish, and features a 1:7 twist rate, with a carbine length gas system. It includes the new 10" 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 5.56 Nato upper is compatible with any mil-spec AR-15 lower. More Information SKU 508N-UASCH556CM410.517SS-10M3 Weight (lbs) 3.500000 Magazine Capacity N/A Length 10.5 Profile M4 Contour Twist 1:7 Finish Stainless

Color : Black Barrel Contour : Government Barrel Length : 20.00 Attachment Type : Direct Mount Finish : Anodized Cartridge : 5.56x45 NATO Muzzle Device Diameter : 0.96 Item Length (Inches) : 31.000 Gas Block Diameter : 0.750 Inches Gas System Length : Rifle Receiver Style : Complete Item Weight (lbs) : 5.450 Hand : Right Material : Aluminum Item Height (Inches) : 4.000 Kit : Full Item Width (Inches) : 2.500 Muzzle Threads : 1/2"x28 Make Model Fit : AR-15.Universal Quantity : 1 Model Number : BRN-16A4 Twist : 1-7 Brownells sku: 430105693 MPN#: None UPC#: 050806500686

SKU: 5165490434 UPC: 5165490434 MFR#: 5165490434 7" Barrel Length 4150V Chrome Moly Vanadium barrel 300AAC Blackout Chamber 1 in 7" Twist Rate Forged Upper Receiver  Nitride Barrel Finish  PSA Patent Pending Muzzle Device Magpul "MOE" carbine length M-Lok handguards Introducing the new “MOE Marauder” pistol upper in 300AAC Blackout exclusively from PSA!  The MOE Marauder upper is designed to function with a red dot or holographic optic.  It does not have provisions for a front sight to be mounted on the barrel.   The perfect upper for your registered AR-15 SBR or AR-15 pistol!

This Aero Precision M4E1 Threaded upper receiver group comes completely assembled with 16” 5.56 barrel and the ATLAS S-ONE M-LOK handguard. This barreled upper receiver group does not include BCG or charging handle allowing you to choose your favorites for your build. The upper receiver is, however, fully assembled with forward assist and dust cover. The M4E1 threaded upper is made from forged 7075-T6 aluminum with a billet machined look that matches the lower and handguard.

KG Angry Kitty 7.5" 5.56 A1 M-Lok Pistol Upper Does Not Come With BCG or Charging Handle. Use the options on the right to add them. FEATURES: KG AR15 A1 Upper with Rear Sight Assembly and Tear Drop Forward Assist 7.5" 4150P 1x7 5.56 Barrel Steel Front Sight Gas Block With Front Sight and Sling Assembly Pistol Gas Tube 4" Free Float M-Lok Handguard Flash Hider

Description Our M4 Mil-Spec Plus, flat-top upper receivers are precision CNC machined from 7075-T6 aluminum forgings for maximum durability and Mil-Spec Type 3 hard coat anodized in rugged black. Whether you are building a match upper or a complete tactical rifle, quality starts with the upper receiver. This receiver comes unmarked for a clean, custom look. The same top quality upper used as the basis of our famous custom rifles.

Description A quality upper assembly without cutting corners. This means starting with a top tier mil-spec forged upper receiver, using a nitrided steel gas block as opposed to phosphate or aluminum, quality American Made M-LOK handguards 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.

Description 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) with a slimline flash can machined from 6061 aluminum. 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.

SKU 51655115220 Brand Palmetto State Armory Model Number 51655115220 UPC 51655115220 DETAILS PSA 7" Nitride 1:7 Pistol Length 5.56 NATO Marauder AR-15 Upper Assembly, FDE - No BCG/CH 7" Barrel Length 4150V Chrome Moly Vanadium barrel 5.56 NATO Chamber 1 in 7" Twist Rate Forged Upper Receiver  Phosphate Barrel Finish  PSA patent pending muzzle device Magpul "MOE" carbine length M-Lok handguards FEATURES

The DDM4V7 Upper Receiver Group by Daniel Defense is constructed around a 16-inch, cold hammer forged barrel and comes equipped with the extra features and quality expected from Daniel Defense products. The interior of the barrel is chrome lined for a superior service life, and is topped with a Daniel Defense improved flash suppressor to greatly mitigate visible muzzle flash. The gas system is composed of a mid-length, direct impingement system with a pinned low profile gas block CNC machined from 4140 hardened steel.

KG Defender III 5.56 Scalloped 16" Rifle Upper Bundle M-LOK Features our scalloped handguard. Allows for a better C grip and offer lighter weight due to the reduced rail. M-Lok Rail section can be added to the top and sides, as the user sees fit. FEATURES: 16" 4150 1x7 5.56 or 1x10 300 Blackout Barrel Nitride Coated T-Marked Upper with M4 Feed Ramps Steel Micro Gas Block, and Pistol Length Gas Tube 15" 7075 T6 Aluminum Scalloped Free Float M-LOK Hand Guard A2 Flash Hider COMES WITH: BCG is a AR15 Style, MPI Tested Bolt Nitride QPQ finish Standard Charging Handle

SKU 51655158680 Brand Palmetto State Armory DETAILS Barrel Length: 16" Gas System: Carbine Barrel Profile: M4 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 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: B5 Systems MLOK Carbine Handguard, Flat Dark Earth Bolt Carrier Group Includedo: No Bolt Steel: N/A Bolt Carrier Profile: N/A

Keeping weight to an absolute minimum while still offering a significant ballistic advantage, this CBC® Upper is the perfect choice for your next AR-47 build. The barrel is machined from 4150 chrome moly steel, heat-treated to RC 28-32 hardness, and properly stress relieved. The nitride finish provides superior corrosion resistance. PLEASE NOTE: Bolt carrier group and charging handle not included. Chambered for 7.62x39mm 7.5" 4150 chrome moly steel barrel is heat-treated to RC 28-32 hardness and properly stress relieved Nitride finish for superior corrosion resistance

Quick Overview SKU: 516445940 UPC: 516445940 MFR#: 516445940 Barrel Length: 20" Gas System: Rifle Length  Barrel Profile: A2 Style Barrel Steel: 4150V Chrome Moly Vanadium 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: F-marked Front Sight Base Muzzle Device: A2 Style Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA Classic Handguards Bolt Carrier Group Included: No Bolt Steel: N/A Bolt Carrier Profile: N/A

This Complete 11 inch M-LOK upper receiver comes with a 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 and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep clean. Barrel Specifications Caliber 9mm Length 11 Material 4150 Chrome Moly Vanadium Profile Straight Finish QPQ Corrosion Resistant Gas System Length Blowback Dimpled? No Twist Rate 1:10 Muzzle Thread 1/2x36 TPI Weight 17.6oz Bolt Carrier Group:

Builder's Grade Blemished 14.5" 5.56 Upper Receiver | 12" KEYMOD | Without Bolt Carrier Group and Charging Handle This complete upper receiver may be considered a pistol or SBR upper until a long enough muzzle device is permanently attached, providing a 16-inch Overall Length barrel. Looking for a quality AR upper that is versatile, reliable, and affordable? Look no further than our 14.5" upper, which can be pinned and welded to meet the 16" OAL requirement.This barrel is the perfect choice for those looking for a compact and maneuverable platform in close quarters (CQB) situations.

SKU 51655104635 Brand Palmetto State Armory Model Number 51655104635 UPC 51655104635 DETAILS Barrel Length: 10.5" Barrel Profile: A2 Style Barrel Steel: Chrome Moly Vanadium Barrel Finish: Nitride Chrome Lining: No Muzzle Thread: 1/2-28 Chamber: 9mm (9x19) Twist Rate: 1 in 10" Barrel Extension: 9mm Muzzle Device: A2 Style Flash Hider Receiver Material: Billet 7075 T6 Receiver Type: Slick Side Handguard Type: PSA 9" Lightweight M-Lok Rail Bolt Included: Yes, (Gen 4, Hybrid) Bolt Steel: 8620, Nitride Treated Charging Handle included: Yes FEATURES

BUILDER'S GRADE COMPLETE 10.5" 5.56 UPPER RECEIVER | A2 | 9" M-LOK | BCG & CH This Complete 10.5 inch M-LOK upper receiver comes with a 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 and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep clean. Barrel: Length - 10.5" Material - 4150 Chrome Moly Vanadium Profile - Government Finish - QPQ Corrosion Resistant Gas System Length - Carbine Gas Block Journal - .750"

This BCA AR-10 complete .308 rifle length upper has a 18" parkerized Heavy barrel, and features a 1:10 twist rate, with a mid-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 .308 upper is compatible with 1st gen DPMS low profile lowers. This has the new handguard. More Information SKU 587N-UASCH308MSC18110P-15MSR Weight (lbs) 8.000000 Magazine Capacity N/A Length 18 Profile Heavy Barrel Twist 1:10 Finish Parkerized

UPC#: 818773023351 23-004-81721-006-DD Daniel Defense 23-004-81721-006 MK18 RIII 5.56mm NATO Black Upper Receiver Group

This BCA AR-15 complete 6mm Arc upper has a 16" M4 contour barrel with a parkerized finish, and features a 1:8 twist rate, with a mid length gas system. It includes a 15" MLOK rail, an M4 flat-top billet upper receiver, a BCA bolt carrier group, a flash hider, and a right-side charging handle (Gen 2) (patent protected). This 6mm Arc upper is compatible with any mil-spec AR-15 lower. More Information SKU 8993N-UASCH6MMAMM41618P-15M3 Weight (lbs) 6.000000 Magazine Capacity N/A Barrel Length 16 Profile M4 Contour Twist 1:8 Barrel Finish Parkerized Material 4150 Chrome Moly Vanadium

This Bear Creek Arsenal AR-15 Complete 5.56 Slick Side upper has a 16" M4 with a parkerized finish, and features a 1:7 twist, with a mid-length gas system. It includes a 15" MLOK rail, a M4 flat-top 7075 billet aluminum  upper receiver, a BCA bolt carrier group, flash hider, and a rear charging handle. This 5.56 upper is compatible with any mil-spec AR-15 lower. This has the new handguard. This Slick Side upper has no forward assist or dust cover. More Information SKU 422N-UASP556MM41617P-15M3 Weight (lbs) 6.000000 Magazine Capacity N/A Barrel Length 16 Profile M4 Contour Twist 1:7

SKU 5165490918 Brand Palmetto State Armory Model Number 5165490918 UPC 5165490918 DETAILS Barrel Length: 11.5" Barrel Profile: A2 Barrel Steel: Chrome Moly Vanadium Barrel Finish: Nitride 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: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: A3 Handguard Type: Lightweight M-Lok 10.5" Free Float Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full-auto

An affordable upper assembly without cutting corners. This means using a nitrided steel gas block from an American Manufacturer as opposed to aluminum, quality American Made handguards, and using a proven Toolcraft M16 profile Black Nitride BCG paired with a 416R Stainless Steel Midlength barrel chambered in 5.56 with a 1:8 twist rate. The 1:8 twist provides the shooter the freedom to pick from a wider selection of bullet weights. From 55gr target rounds to 69gr match bullets, this barrel will stabilize them all.

Builder's Grade Blemished 14.5" 5.56 Upper Receiver | 12" KEYMOD | With Bolt Carrier Group and Charging Handle This complete upper receiver may be considered a pistol or SBR upper until a long enough muzzle device is permanently attached, providing a 16-inch Overall Length barrel. Looking for a quality AR upper that is versatile, reliable, and affordable? Look no further than our 14.5" upper, which can be pinned and welded to meet the 16" OAL requirement.This barrel is the perfect choice for those looking for a compact and maneuverable platform in close quarters (CQB) situations.

Builder's Grade Blemished 14.5" 5.56 Upper Receiver | 12" KEYMOD | A2 | Without Bolt Carrier Group and Charging Handle This complete upper receiver may be considered a pistol or SBR upper until a long enough muzzle device is permanently attached, providing a 16-inch Overall Length barrel. Looking for a quality AR upper that is versatile, reliable, and affordable?

This BCA AR-15 complete 5.56 Nato rifle length upper has a 22" heavy contour barrel with a 416R stainless steel finish, and features a 1:8 twist rate, with a rifle length gas system. It includes the new 15" 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 5.56 Nato upper is compatible with any mil-spec AR-15 lower. More Information SKU 8972N-UASCH556RHB2218SS-15M3 Weight (lbs) 7.250000 Magazine Capacity N/A Barrel Length 22 Profile Heavy Barrel Twist 1:8