Upper Receivers/Conv Kits

The proprietary UXR, or User XChange Rifle, is the pinnacle of firearm innovation. This revolutionary system offers unmatched modularity and performance. The patent-pending XCHANGE system allows the shooter to quickly convert to alternate calibers on the...

The proprietary UXR, or User XChange Rifle, is the pinnacle of firearm innovation. This revolutionary system offers unmatched modularity and performance. The patent-pending XCHANGE system allows the shooter to quickly convert to alternate calibers on the...

The MK1 MOD 1-M line features the PWS long stroke piston system. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free-float MLOK handguard, forward assist controls, and a more true to...

Faxon Firearms Ion Ultralight, Complete Upper Receiver, Gas Operated, 556nato, 16" Pencil Barrel, Integral 3-port Brake, Multi-position Adjustable Gas Block, Fits Ar-15, 13" M-lok Handguard, Matte Finish, Black, Includes Gunner Lightweight Bolt Carrier...

The PWS MK1 MOD 2-M line, revamped for 2018" features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a variety of features exclusive to this line. Starting with patent pending PicLok...

The PWS MK1 MOD 2-M line features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a variety of features exclusive to this line. Starting with patent pending PicLok technology on the free...

The groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward...

The innovative RAPTOR belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models...

The groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward...

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

Sons Of Liberty Gun Works East India Starter Kit, Complete Upper Receiver, 556nato, 16" Barrel, Mid Length Gas System, Fits Ar-15, Qpq Finish, Black Eic-16-chf-556

Barrett Mrad Barrel Conversion Kit, 300 Norma Magnum, 26" Barrel, 10 Rounds, 1 Magazine 19121

The 9mm AUG Police training kit was developed to allow Austrian Police units to train with their AUGs using 9mm ammunition while maintaining the same feel and manual of arms as their 5.56x45mm duty setups. Great for training, plinking, or defense, this...

Savage Firearms Single Shot Adapter are designed for all Savage Axis & 110 models with factory flush fit magazines. The Single Shot Adaptor is to be used in place of the factory magazine to limit the rifle to being a single shot. Simply replaces the...

The ARAK-21 is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21 upper receiver...

This Daniel Defense M4A1 FSP AR15 style Upper Receiver Group was built for customers wanting a firearm inspired by USSOCOM SOPMOD Block II. This upper features the M4A1 FSP RIS II picatinny quad rail in Flat Dark Earth, a 14.5" M4 profile barrel,...

Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine to bring to market a true next-gen upper for the AR-15...

Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine to bring to market a true next-gen upper for the AR-15...

Savage Firearms Single Shot Adapter are designed for all Savage Axis & 110 models with factory flush fit magazines. The Single Shot Adaptor is to be used in place of the factory magazine to limit the rifle to being a single shot. Simply replaces the...

Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine to bring to market a true next-gen upper for the AR-15...

The ARAK-21 is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21 upper receiver...

Advantage Arms Conversion Kit: Convert your 9mm/.40 S&W Glock down to 22LR so trips to the range dont break the bank. Or if you want to teach your kid the fun of shooting but dont want him/her to start on the 9mm" a conversion kit is a great learning /...

Geissele Automatics Super Duty Mod1, Complete Upper Receiver, 556nato, 14.5" Pinned (16" Oal) Barrel, M-lok Free Float Handguard, Geissele Airborn Charging Handle, Nanoweapon Reliability Enhanced Bolt Carrier Group, Fits Ar-15, Anodized Finish, Black...

Advantage Arms Conversion Kit: Convert your 9mm/.40 S&W Glock down to 22LR so trips to the range dont break the bank. Or if you want to teach your kid the fun of shooting but dont want him/her to start on the 9mm" a conversion kit is a great learning /...

The proprietary UXR, or User XChange Rifle, is the pinnacle of firearm innovation. This revolutionary system offers unmatched modularity and performance. The patent-pending XCHANGE system allows the shooter to quickly convert to alternate calibers on the...

Geissele Automatics Super Duty Mod1, Complete Upper Receiver, 556nato, 16" Barrel, 1:7 Twist, Huxwrx Flash Hider-qd 556, 15" Smr Mk16 M-lok Free Float Handguard, Geissele Airborn Charging Handle, Nanoweapon Reliability Enhanced Bolt Carrier Group, Fits...

Geissele Automatics Urg-i, Near Clone, Complete Upper Receiver, 556nato, 14.5" (16" Oal) 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...

Savage Firearms Single Shot Adapter are designed for all Savage Axis & 110 models with factory flush fit magazines. The Single Shot Adaptor is to be used in place of the factory magazine to limit the rifle to being a single shot. Simply replaces the...

The proprietary UXR, or User XChange Rifle, is the pinnacle of firearm innovation. This revolutionary system offers unmatched modularity and performance. The patent-pending XCHANGE system allows the shooter to quickly convert to alternate calibers on the...

Noveske Noveske9, Gen 4, Complete Upper, 9mm, 16" Barrel, Nsr 15 Rail, Cerakote Finish, Black 03000446Model: Noveske9Product Type: UpperFinish/Color: CerakoteFit: AR-15Description: M-LOKCaliber: 9MM

Geissele Automatics Super Duty Mod1, Complete Upper Receiver, 556nato, 14.5" Pinned (16" Oal) Barrel, M-lok Free Float Handguard, Geissele Airborn Charging Handle, Nanoweapon Reliability Enhanced Bolt Carrier Group, Fits Ar-15, Anodized Finish, Desert...

Savage Firearms Single Shot Adapter are designed for all Savage Axis & 110 models with factory flush fit magazines. The Single Shot Adaptor is to be used in place of the factory magazine to limit the rifle to being a single shot. Simply replaces the...

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

Rock River Arms A4 mid-length upper comes chambered in .450 Bushmaster with a 16" chrome moly 1/24 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float rail and a RRA Operator Brake (5/8-32 thread). This is a...

Rock River Arms complete Tactical Carbine upper is an A4 upper chambered in .458 SOCOM with a 16" chrome moly bull barrel and 1:14 twist. Additionally the upper comes with a complete bolt carrier group, charging handle assembly, 15" RRA lightweight M-Lok...

Rock River Arms RRAGE 3G A4 carbine upper comes chambered in 5.56mm NATO. This extruded aluminum upper receiver comes with a port door and no forward assist. Additionally, this upper is equipped with a RRA 15" RRAGE 3G M-Lok compatible handguard, a 16"...

Rock River Arms A4 Carbine upper comes chambered in .350 Legend with a 16" chrome moly 1/16 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float rail and a RRA Operator Brake (1/2-36 thread). This is a complete...

Rock River Arms A4 Coyote Carbine upper comes chambered in .300 AAC / Blackout with a 16" chrome moly 1/8twist barrel. Additionally this upper includes a RRA 12.5" M-Lok compatible lightweight free float rail and a Smith Vortex flash hider (5/8-24...

Luth-ar A2 Upper Receiver, Upper, 223 Remington, 556nato, Black, Ar15, Anodized Ur-a2-aModel: A2 Upper ReceiverProduct Type: UpperFinish/Color: AnodizedFit: AR15Caliber: 223 Remington

The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big...