Upper Receivers and Parts

This receiver is manufactured with strict quality control, plus features an ejection port cover, forward assist, and an integral picatinny rail that extends the length of the handguard.There is a combat grade barrel at the heart of the m4-89, which is...

The complete upper is constructed of billet machined 7075-t6 aluminum with proprietary extended aluminum hand guard w/ magpul m-lok mounting system and integrated upper/hand guard stainless steel anti-rotation pin.Its match grade 416r stainless steel...

Agency Arms was created in January of 2015 and created by weapons operators themselves interested more in the functionality than the visual appeal. Agency Arms is a Veteran and LEO owned establishment that specializes in after market weapon modifications...

Agency Arms was created in January of 2015 and created by weapons operators themselves interested more in the functionality than the visual appeal. Agency Arms is a Veteran and LEO owned establishment that specializes in after market weapon modifications...

The GEMTECH INTEGRA upper series is the most advanced Integrally Suppressed Upper Receiver available. They have teamed up with NEMO Arms to create the smallest and easiest to maintain package the world has ever seen. The INTEGRA utilizes GEMTECH's proven...

This complete kit will convert any MIL-SPEC AR-15/M4 Lower into the top-performing MCX-SPEAR LT.

Cmmg Dissent, Mk4, Complete Upper Receiver, 300 Blackout, 10.5" Threaded Barrel, 5/8x24, Cmmg Zeroed Linear Compensator, Cerakote Finish, Midnight Bronze, M-lok Free Float Handguard, Fits Ar-15 Lower Receiver, Includes 1913 Picatinny Rail End Plate...

Born from the SOCOM PDW solicitation, the NEW Maxim Defense PDX(TM) U.R.G. is designed to handle the fierce demands of the Tier 1 community. The PDX(TM) U.R.G. dominates in close quarter encounters and achieves maximum energy on target without...

Maxim Defense Industries Pdx Urg, Complete Upper Receiver, 7.62x39, 5.5" Barrel, Anodized Finish, Bolt Carrier Assembly And Charging Handle, M-lok Compatible Handguard, Hatebrake Muzzle Brake Mxm-50814Model: PDX URGProduct Type: UpperAccessories: Bolt...

Maxim Defense Industries Pdx Urg, Complete Upper Receiver, 5.56nato, 5.5" Barrel, Anodized Finish,Bolt Carrier Assembly And Charging Handle, M-lok Compatible Handguard, Hatebrake Muzzle Brake Mxm-50816Model: PDX URGProduct Type: UpperAccessories: Bolt...

Maxim Defense Industries Pdx Urg, Complete Upper Receiver, 300blk, 5.5" Barrel, Anodized Finish, Bolt Carrier Assembly And Charging Handle, M-lok Compatible Handguard, Hatebrake Muzzle Brake Mxm-50828Model: PDX URGProduct Type: UpperAccessories: Bolt...

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that seamlessly blends form and function. Beyond quality and...

Barrett Mrad Barrel Conversion Kit, 338lap, 26, 10rd 19149

Barrett Mrad Barrel Conversion Kit, 6.5 Creedmoor, 24" Fluted Barrel, 10rd Magazine 18529

Geissele Automatics Urg-1, Near Clone, Complete Upper Receiver, 556nato, 14.5" Barrel, 1:7 Twist, Pinned And Welded Surefire 4 Prong Flash Hider, Desert Dirt Color 13.5" Smr Mk16 M-lok Free Float Handguard, Desert Dirt Color Geissele Airborne Charging...

Geissele Automatics Urg-1, Near Clone, Complete Upper Receiver, 556nato, 11.5" Barrel, 1:7 Twist, Pinned And Welded Surefire 4 Prong Flash Hider, Desert Dirt Color 10.5" Smr Mk16 M-lok Free Float Handguard, Desert Dirt Color Geissele Airborne Charging...

Geissele Automatics Urg-1, Near Clone, Complete Upper Receiver, 556nato, 10.3" Barrel, 1:7 Twist, Pinned And Welded Surefire 4 Prong Flash Hider, Desert Dirt Color 9.3" Smr Mk16 M-lok Free Float Handguard, Desert Dirt Color Geissele Airborne Charging...

Nove Upper, 762nato, 9mm, 12.5", Black, Mlok, Ar-15, Anodized 03002552Product Type: UpperFinish/Color: AnodizedFit: AR-15Description: MLOKCaliber: 762NATO

Steyr Arms Ssg M1, Conversion Kit, 338lap, 27.2, Fde E6201100001daModel: SSG M1Caliber: 338 Lapua

Noveske N4, Gen 4, Complete Upper, 556 Nato/223 Remington, 18" Spr Barrel, Nsr 15 Rail, Cerakote Finish, Flat Dark Earth 03002557-fdeProduct Type: UpperFit: AR-15Caliber: 223 Remington

Knight's sr-15 e3 mod 2 series 5.56mm nato barrel is manufactured for military grade durability, and is free-floated inside a urx4 m-lok handguard.An improved e3 round-lug bolt design both enhances function and increases bolt life far beyond the industry...

Knight's sr-15 e3 mod 2 series 5.56mm nato barrel is manufactured for military grade durability, and is free-floated inside a urx4 m-lok handguard.An improved e3 round-lug bolt design both enhances function and increases bolt life far beyond the industry...

Knight's upper receiver kit, sr-15 cqb mod 2, features a 5.56mm nato 11.5" chrome lined barrel manufactured for military grade durability and is free-floated inside a urx4 m-lok handguard.An improved e3 round-lug bolt design both enhances function and...

The adams arms p3 is the performance, match-grade model in the p-series lineup.The p3 features a proof research carbon fiber wrapped barrel, jet comp, ambidextrous charging handle, low mass carrier, an ergonomic free float rail, and our signature...

Barrel Length: 13.70"

Barrel Length: 16"

Barrel Length: 13.70"

Its no secret that pistol stabilizing braces have been a target for scrutiny over the years, and those that enjoy building their own ar pistols have wondered what will come out of all the uncertainty.Dissent is cmmg's answer.Utilizing cmmg's patent...

Barrel Length: 13.70"

The design philosophy behind the radian model 1 uses the highest quality raw materials, most precise cnc machining equipment, and best components available to create a weapon that seamlessly blends form and function.The model 1 features fully...

The mdp-9 is designed to be light, small, yet fully functional, offering a revolutionary roller delay action that reduces recoil.Gain the peace of mind and confidence needed for protection in any situation, with the perfect balance of size and strength...

Mr556a1 upper receiver 5.56mm.81000584.Caliber: 223 Rem | 5.56 NATOBarrel: 16.5"Finish: Matte Black

Mcx-spear lt urg 7.62x39 16".Uamcx-762r-16b-lt-blk | black.Caliber: 7.62 x 39mmBarrel: 16"Finish: Black

Mk12 spr urg 5.56 18".23-142-10035.Caliber: 223 Rem | 5.56 NATOBarrel: 18"Finish: Matte BlackSights: No Sights

Ddm4 v7 pro urg 5.56 18".23-128-20044-047.Caliber: 223 Rem | 5.56 NATOBarrel: 18" S2WFinish: Matte BlackSights: No Sights