Uppers Gun Parts

(3,449 deals total)

SKU 51655155040 Brand Palmetto State Armory DETAILS Barrel Length: 16" Gas System: Carbine Barrel Profile: M4 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 Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full-auto

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 5165451263 Brand Palmetto State Armory Model Number 5165451263 UPC 5165451263 DETAILS Barrel Length: 8.5" Barrel Profile: Heavy Gas System: Pistol-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 Fluted Flash Can Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 10.5" Lightweight M-Lok Free Float Rail Bolt Carrier Group Included: Yes

SKU: LWD-ARUPPER-556-16-CO UPC: 840235901723 Mil-Spec charging handle and bolt carrier group included Introducing the Contract Overrun complete upper receiver from Lone Wolf Arms, your ultimate gateway to crafting a top-tier AR15 rifle. Designed with precision and reliability in mind, this upper receiver boasts an 16-inch barrel with a 1/8 twist rate, chambered in the versatile .223 Wylde caliber. Crafted from resilient 41V50 steel, this barrel ensures durability and accuracy, even under the most demanding conditions.

SKU: LWD-ARUPPER-556-11-CO UPC: 840235901716 Mil-Spec charging handle and bolt carrier group included Introducing the Contract Overrun complete upper receiver from Lone Wolf Arms, your ultimate gateway to crafting a top-tier AR15 rifle. Designed with precision and reliability in mind, this upper receiver boasts an 11.5-inch barrel with a 1/8 twist rate, chambered in the versatile .223 Wylde caliber. Crafted from resilient 41V50 steel, this barrel ensures durability and accuracy, even under the most demanding conditions.

BCM® M4 Flat Top Upper Receiver with cosmetic blemishes. Most have scratches or scuffs. The upper comes unassembled, but complete with BCM forward assist assembly and ejection port cover door assembly. You must assemble it. (Assembly required) (all parts, but you will have to assemble together) THESE ARE USED/DEMO UPPER RECEIVER ASSEMBLIES. All will have several nicks, scratches, and marks on exterior finish. NO HANDPICKING. This receiver has the M4 feedramps machined in. This is to be used with barrels that include the M4 barrel extension. Built to the correct Mil-Specs.

SKU 5165500368 Brand Palmetto State Armory Model Number 5165500368 UPC 5165500368 DETAILS Barrel Length: 20" Gas System: Rifle-length Barrel Profile: A2 Style Barrel Steel: 416R Stainless Steel Barrel Finish: Stainless 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 15" M-Lok Lightweight Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158

This Aero Precision M4E1 Threaded AR-15 upper receiver group comes completely assembled with 16” 5.56 barrel and the ATLAS R-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.

This BCA AR-15 complete 5.56 Nato rifle length upper has a 16" M4 contour barrel with a black nitride finish, and features a 1:7 twist rate, with a mid-length gas system. It includes a 15 1/4" 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. This has the new handguard. More Information SKU 611N-UASCH556MM41617M-15M3 Weight (lbs) 6.000000 Magazine Capacity N/A Length 16 Profile M4 Contour Twist 1:7 Finish Black Nitride

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.

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

Builder's Grade Barreled 16" 9mm Upper Receiver | A2 | 15" M-LOK Handguard | Pistol Caliber | Black | Without Bolt Carrier Group and Charging Handle NO BCG OR CHARGING HANDLE INCLUDEDClick here for Charging HandlesClick here for Bolt Carrier Groups This Barreled 16 inch M-LOK upper receiver comes with a 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 M4 barrel.

100-039-110WB AR-15 FM-9 5" 9MM UPPER RECEIVER M-LOK ASSEMBLED BLACK Mfr Part: FM9-5UR Cartridge: 9 mm Luger Finish: Black Style: Complete Length: 5" Muzzle: 1/2-36 Twist: 1-10 Complete Flattop Upper for Pistol Caliber AR-15 Carbines The Foxtrot Mike Products 9mm Upper Receiver comes fully assembled and ready to drop on any pistol caliber lower receiver that uses Glock magazines. With its full-length Picatinny top rail and M-LOK compatible handguard, the Foxtrot Mike 9mm Upper offers plenty of mounting space for optics and other accessories.

AR-15 Ejection Port Dust Cover Engraving - Air ForceAR-15 Ejection Port Dust Cover Complete Assembly with Air Force Engraving.Includes:Ejection Port Cover Door (Dust cover)Steel SpringSteel RodC-ClampFits: AR-15 MPN#: DC223-AIR

This complete upper includes our Slimline Handguard. The slimline line of handguards have a unqiue milling profile, designed to maximize grip ergonimics 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.

This complete upper includes our Slimline Handguard. The slimline line of handguards have a unqiue milling profile, designed to maximize grip ergonimics 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.

100-039-110WB AR-15 FM-9 5 9mm Upper Receiver M-LOK Assembled Black Cartridge: 9 mm Luger Finish: Black Style: Complete Length: 5" Muzzle: 5/8-24 Twist: 1-10 Description Specs Complete Flattop Upper for Pistol Caliber AR-15 Carbines The Foxtrot Mike Products 9mm Upper Receiver comes fully assembled and ready to drop on any pistol caliber lower receiver that uses Glock magazines. With its full-length Picatinny top rail and M-LOK compatible handguard, the Foxtrot Mike 9mm Upper offers plenty of mounting space for optics and other accessories.

More than 400 AR-15 Stripped or Complete Upper Receivers In Stock Now!

SKU 51655156160 Brand Palmetto State Armory DETAILS Barrel Length: 7.5" Gas System: Pistol-length Barrel Profile: Heavy Barrel Steel: 4150V Chrome Moly Steel Barrel Finish: Phosphate Chrome Lining: None Muzzle Thread: 5/8x 24" 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 Hand guard Type: PSA 6" Lightweight Hex Full Picatinny M-Lok Free Float Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158

This combo kit comes with the 9mm Right to Bear Barrel of your choice, a slick side 9mm (.22LR compatible) upper receiver, and a 9mm AR9 bolt assembly. The Right To Bear 9mm Barrels are machined in house on state-of-the-art CNC machines and are thoroughly inspected at multiple stages of the build process to ensure quality. These barrels are machined from 4150 Chrome Moly Vanadium Steel and have a 1:10 twist rate. The final process is a salt bath Nitride finish for an added layer of protection.The RTB Upper is made from forged 7075-T6 aluminum and is Hard Coat Anodized.

Caliber: 22LR Upper Receiver: Slick Side Forged 7075 T6 Bolt: Stainless Steel Construction Barrel: 4.5 inch / 1:16 Handguard: 5.5 inch Free-Float M-LOK Muzzle Device: Flash Can Linear Compensator Charging Handle: Anti-Jamb 22lr Compatible with standard AR lower receivers Made in USA

Davidson Defense "Black Tuesday" AR-15 Pistol Featuring Davidson Defense Upper 5.56 NATO 7.5" 416R SS Stainless 1:7T 7 M-Lok Gauntlet Arms Freefloat Handguard Upper Build Kit (Assembled or Parts Kit) Caliber: 5.56x45 NATO / .223 Remington

Davidson Defense "Silver Tongue" LR-308 Rifle Featuring Davidson Defense Upper 6.5 Creedmoor 18" 416R SS Stainless 1:8T 15" M-Lok Gauntlet Arms Free Float Handguard Complete Upper Build (Assembled or Parts Kit) Caliber: 6.5 Creedmoor / 6.5x48mm

Davidson Defense "Silver Tongue" LR-308 Rifle Featuring Davidson Defense Upper 6.5 Creedmoor 18" 416R SS Stainless 1:8T 15" M-Lok Gauntlet Arms Free Float Handguard Upper Build Kit (Assembled or Parts Kit) Caliber: 6.5 Creedmoor / 6.5x48mm

With a 10.5-inch barrel made of Chrome Moly Vanadium and a twist rate of 1-7, the 5.56 NATO AR-15 Upper from Andro Corp Industries offers dependable performance. It comes fitted with a sleek M-LOK hand guard, allowing for easy customization with your favorite accessories. Constructed from Mil-Spec 7075 T6 aluminum and featuring T-marks, the upper is also dry film lubricated to ward off corrosion. Its use of Mil-Spec components makes it a trustworthy choice. Barrel Specifications Caliber 5.56 Length 10.5" Material 4150 Chrome Moly Vanadium Profile M4 Finish QPQ Corrosion Resistant

Pistol Upper assembly for your Ar9 / 9mm Ar15. 5/8-24 Threaded barrel, 4150 CMV Nitride 4″ MLok Handguard, Sport / Slick Side receiver (7075-t6 Aluminum, anodized black)

The Aero Precision M4E1 Enhanced AR-15 Stripped Upper is a one-piece forging that combines the handguard mounting hardware with the upper receiver. This design allows for additional lightening cuts, resulting in increased weight savings and improved cooling efficiency. The upper is made from a 7075-T6 aluminum forging machined to MIL-SPEC and finished with a durable hardcoat anodized finish. It is compatible with all MIL-SPEC AR-15/M16 components and removes the forward assist for further weight savings. Note: This upper receiver is not compatible with piston kits. Features:

This BCA AR-15 complete 5.56 Nato pistol length upper has a 7.5" M4 contour barrel with a parkerized finish, and features a 1:7 twist rate, with a pistol length gas system. It includes a 6.5" MLOK rail, an M4 flat-top 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 621N-UA556PM47.517P-7M3 Weight (lbs) 3.250000 Magazine Capacity N/A Length 7.5 Profile M4 Contour Twist 1:7 Finish Parkerized Material 4150 Chrome Moly Vanadium Thread Pitch 1/2 x 28

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 1:8 twist rate, with a carbine length gas system. It includes a 9.5" 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 264N-UA556CM410.518SS-10M3 Weight (lbs) 3.500000 Magazine Capacity N/A Length 10.5 Profile M4 Contour Twist 1:8 Finish Stainless Material 416R Stainless Steel

Side Charging Complete 16" Uppers from $199.99

MAT9-U-FDE Product Info for Matador Arms Mat9 7.825 in 9mm Upper Receiver The Mat9 Upper is a self-contained complete 9mm receiver. Bufferless, compact and reliable. The blowback system runs suppressed or unsuppressed without spring changes. The charging handle is non-reciprocating and reversable for right or left-handed shooters. It is compatible with AR9s and AR15s with Mag Adapters. Compatible with Glock, Sig, Colt, Scorpion and Mp5 magazines.image Specifications for Matador Arms Mat9 7.825 in 9mm Upper Receiver: Manufacturer: Matador Arms Cartridge: 9mm Luger

MAT9-UGRY Product Info for Matador Arms Mat9 7.825 in 9mm Upper Receiver The Mat9 Upper is a self-contained complete 9mm receiver. Bufferless, compact and reliable. The blowback system runs suppressed or unsuppressed without spring changes. The charging handle is non-reciprocating and reversable for right or left-handed shooters. It is compatible with AR9s and AR15s with Mag Adapters. Compatible with Glock, Sig, Colt, Scorpion and Mp5 magazines.image Specifications for Matador Arms Mat9 7.825 in 9mm Upper Receiver: Manufacturer: Matador Arms Cartridge: 9mm Luger

Attachment Type : M-LOK Barrel Contour : Government Barrel Length : 11.50 Cartridge : 5.56x45 NATO Color : Black Finish : Anodized Gas Block Diameter : 0.750 Inches Gas System Length : Carbine Hand : Right Item Length (Inches) : 11.500 Item Weight (lbs) : 2.740 Make Model Fit : AR-15.Universal Material : Aluminum Muzzle Device Diameter : 0.75 Muzzle Threads : 1/2"x28 Quantity : 1 Receiver Style : Assembled Twist : 1-7 Brownells sku: 430105081 MPN#: 4027-3410-B4 UPC#: 050806000254

Barrel Contour : Medium Attachment Type : Direct Mount Barrel Length : 14.50 Twist : 1-7 Cartridge : 5.56x45 NATO Color : DDC Material : Multiple Hand : Right Finish : Anodized Make Model Fit : AR-15.Universal Receiver Style : Stripped Model Number : FDE Folder Quantity : 1 Brownells sku: 430106390 MPN#: None

SKU 51655155576 Brand Palmetto State Armory DETAILS Barrel Length: 20" Gas System: Rifle Length Barrel Profile: A2 Style Barrel Steel: 416R Barrel Finish: Stainless Steel 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 15" Hex Full Picatinny M-Lok Free Float Rail Bolt Carrier Group Included: No Charging Handle Included: No FEATURES

SKU 51655160141 Brand Palmetto State Armory DETAILS Barrel Length: 20" Gas System: Rifle-Length Barrel Profile: A2 Style Barrel Steel: 416R Stainless Steel Barrel Finish: Stainless Steel Chrome Lining: None Muzzle Thread: 5/8-24 Chamber: 308 WIN Twist Rate: 1:10 Barrel Extension: M4-style Diameter at Gas Block: .750 Gas Block Type: Low-profile 3 position click switch adjustable gas block Gas Tube: Black Nitride Gas Tube Muzzle Device: A2 Style Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: PA10

Matador Arms "Montgo-9 Mil-Spec (With Iron Sights)" 5.5" AR-15 Pistol Featuring Matador Arms UpperComplete Upper Build (Assembled or Unassembled) Caliber:Caliber: 9mm / 9x19A 9mm AR pistol might be the most fun of all the ways to shoot one of the most popular calibers. In an AR platform that is more compact and mobile than a full rifle build, you have the same low recoil versatility that 9mm offers.

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 Complete 11" 9mm Upper Receiver - Black | FLASH CAN | 12" M-LOK | With Bolt Carrier Group and Charging Handle This Complete 11 inch M-LOK upper receiver comes with a 12 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.

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?

This BCA AR-15 complete 5.56 Nato rifle length upper has a 16" M4 contour hammer forged barrel with a black nitride finish, and features a 1:7 twist rate, with a carbine 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 (Gen2) handle (patent protected), and fits on any mil-spec AR-15 lower.  More Information SKU 9790N-UASCH556CM41617MHF-15M3 Weight (lbs) 5.300000 Magazine Capacity N/A Length 16 Profile M4 Contour Twist 1:7 Finish Black Nitride Material 4150 Chrome Moly Vanadium

Quick Overview SKU: 7780446 UPC: 7780446 MFR#: 7780446 Barrel Length: 16" Gas System: Mid-length Barrel Profile: A2 Barrel Steel: Chrome-Moly Vanadium Barrel Finish: Melonite 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: F-marked Front Sight Base Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Hand guard Type: Magpul MOE Black Hand Guards Bolt Carrier Group Included: No Bolt Steel: N/A Bolt Carrier Profile: N/A

This BCA AR-10 complete .308 rifle length upper has a 20" 416R stainless steel and black nitride finish with bear claw flutes Heavy barrel, and features a 1:10 twist rate, with a rifle 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. More Information SKU 9045N-UASCH308RHB20110SSBCF-15MSR Weight (lbs) 8.250000 Magazine Capacity N/A Length 20 Profile Heavy Barrel Twist 1:10

SKU 51655157796 Brand Palmetto State Armory DETAILS Barrel Length: 18" Gas System: Rifle-length Barrel Profile: A2 Style Barrel Steel: 416R Barrel Finish: Stainless Steel Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: .223 Wylde Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low profile adjustable gas block Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 15" Lightweight M-Lok Free Float Rail Bolt Carrier Group Included: No Charging Handle Included: No

AR-15 5.56/.223 7.5" Pistol Upper Assembly / 7" Fake Can / MlokAR-15 5.56/.223 7.5" Pistol Upper Assembly / 7" Fake Can / Mlok Features: Overall length: 21"Chamber - 5.56 NATO  (Shoots both .223 Rem and 5.56 NATO) Barrel Twist - 1x7 Barrel Thread - 1/2 x 28 Barrel Steel - 41V50 CMV, Gov't Profile, Parkerized, M4 Feedrmaps Muzzle Brake - 7" Moriarti Fake Can anodized black, aluminum steel, caliber and logo engraved, G2. Not pinned.

This BCA AR-10 complete .308 rifle length upper has a 20" 416R stainless straight fluted Heavy barrel, and features a 1:10 twist rate, with a rifle 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 9334N-UA308RMW20110SSFFUR-15MSR Weight (lbs) 8.250000 Magazine Capacity N/A Length 20 Profile Heavy Barrel Twist 1:10 Finish Stainless Material 416R Stainless Steel

This BCA AR-10 complete .308 rifle length upper has a 20" 416R stainless steel straight fluted Heavy barrel, and features a 1:10 twist rate, with a rifle 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 580N-UASCH308RMW20110SSF-15MSR Weight (lbs) 8.250000 Magazine Capacity N/A Length 20 Profile Heavy Barrel Twist 1:10

This BCA AR-10 complete .308 rifle length upper has a 20" 416R stainless Heavy barrel, and features a 1:10 twist rate, with a rifle 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 and features the new handguard. This .308 upper is compatible with 1st gen DPMS low profile lowers. More Information SKU 9253N-UA308RMW20110SSFUR-15MSR Weight (lbs) 8.250000 Magazine Capacity N/A Length 20 Profile Heavy Barrel Twist 1:10 Finish Stainless Material 416R Stainless Steel

SKU 51655155039 Brand Palmetto State Armory DETAILS Barrel Length: 16” Barrel Material: 4150V Chrome Moly Vanadium Steel Barrel Finish: Nitride Barrel Profile: M4 Chamber: 5.56 NATO Twist Rate: 1 in 7” Extension: M4 Gas System: Carbine Gas Block Type: Low Profile .750” Diameter Upper Receiver: Forged 7075 T6 Aluminum Receiver Style: M4 Flat top with feed ramps Receiver Finish: Hardcoat Anodized Forward Assist: Yes Dust Cover: Yes Handguard Style: PSA 13.5" Lightweight Hex Full Picatinny M-LOK handguard Bolt Carrier Group: N/A Charging Handle: N/A FEATURES

This Complete 10.5 inch M-LOK upper receiver comes with a 12 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 300BLK Length 10.5" Material 4150 Chrome Moly Vanadium Profile Medium Finish QPQ Corrosion Resistant Gas System Length Pistol Gas Block Journal .750" Dimpled? No Twist Rate 1:7 Muzzle Thread 5/8x24 TPI Weight 20.8oz

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.

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 receiver features the same tried-and-true construction and aesthetics as our M4E1 Threaded Upper Receivers, without provisions for a forward assist. The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. 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. INCLUDES: M4E1 Threaded Assembled No Forward Assist Upper Receiver

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 included ATLAS R-ONE Handguard is designed with size and weight in mind, 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. INCLUDES:

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 BCA AR-15 complete .450 Bushmaster rifle length upper has a 18" heavy barrel with a parkerized finish, and features a 1:24 twist rate, with a mid-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 .450 Bushmaster upper is compatible with any mil-spec AR-15 lower. This has the new handguard. More Information SKU 691N-UA450MHB18124P-15M3 Weight (lbs) 6.000000 Magazine Capacity N/A Length 18 Profile Heavy Barrel Twist 1:24 Finish Parkerized

This BCA AR-15 Complete Upper has a 16" M4 Contour black nitride cold hammer forged barrel, it features a 1:8 Twist Rate and a Carbine 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, a rear Charging Handle, and is chambered in 5.56 NATO. Shop more 5.56 NATO Uppers! Magazine not included. Check out Magazines here! See All Ammunition Recommendations Here. It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed. More Information

This BCA AR-15 complete 5.56 Nato rifle length upper has a 16" M4 contour barrel with a parkerized finish, and features a 1:8 twist rate, with a carbine length gas system. It includes the new 15" MLOK rail, an M4 flat-top forged upper receiver, a BCA bolt carrier group, and a rear charging handle. This 5.56 Nato upper is compatible with any mil-spec AR-15 lower. More Information SKU 617N-UA556CM41618P-15M3 Weight (lbs) 5.300000 Magazine Capacity N/A Length 16 Profile M4 Contour Twist 1:8 Finish Parkerized Material 4150 Chrome Moly Vanadium Thread Pitch 1/2 x 28 Caliber 5.56 NATO

SKU LSA-BKITGRN11 Brand Lead Star Arms Model Number LSA-BKITGRN11 UPC 810055795420 DETAILS Forged from aluminum and designed to withstand duty use, our AR-15 builder's kits are built for business. Upper Receiver: CNC machined from 7075-T6 aluminum for extreme precision and enhanced durability. Flat top picatinny design for versatility in mounting optics and other enhanced components. M4 feed ramps for added reliability. Designed for use with all MIL-SPEC components. Sniper Green Cerakote Lower Receiver:

The Stag 10 Marksman Complete Upper comes with a precision machined Stag 10 Upper receiver ready to be combined with any compatible Stag 10 Lower of your choice. Its 18 inch barrel is chambered in .308 with a 1/10 twist rate. The barrel is coated with Black Nitride with a VG6 Gamma Compensator, and 16.5" Stag 10 SL M-LOK Handguard. * To prevent any confusion, the purchase of any Stag Arms Complete Upper does NOT include charging handle or BCG. ATF Regulated No Tax Stamp No State Compliance California, New York, Capacity Limited States Platform Stag 10 Barrel Length 18"