SBR Uppers

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...

Primary Weapons Systems Mk109 Mod 1-m, Upper Receiver, Fits Ar-15, 300 Blackout, 9.75" Barrel, 1:8" Twist, Pws Triad Muzzle Device, 8.9" Pws Piclok Mlok Handguard, Anodized Finish, Black, Includes Radian Raptor Ambidextrous Charging Handle M109ub01-1f

Primary Weapons Systems Mk114 Mod 1-m, Upper Receiver, 223 Wylde, 14.5" Barrel, No Muzzle Device, Anodized Finish, Black, Mlok Handguard, Long Stroke Piston System, Adjustable Gas System, Fits Ar-15 M114ua01-2f-nc

Geissele Automatics Complete Upper, Super Duty Mod1, 556nato, 11.5" Cold Hammer Forged Barrel, Chrome Lined, 1:7 Twist, Anodized Finish, Black, Flat Top, Huxwrx Flash Hider-qd Muzzle Device 08-544b

Geissele Automatics Complete Upper, Super Duty Mod1, 556nato, 11.5" Cold Hammer Forged Barrel, Chrome Lined, 1:7 Twist, Anodized Finish, Desert Dirt Color, Flat Top, Huxwrx Flash Hider-qd Muzzle Device 08-544s

Geissele Automatics Super Duty Mod1 Upper 556nato 11.5" Black 1:7 Flat Top 08-544b Anodized

This Rosco 12.5" M4 5.56 NATO Bloodline Barrel is designed to be the perfect addition to any SBR or Pistol build. The Rosco 5.56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. They are a long way from their daddys...

The Rosco Sauce Pack bundles were created after direct requests from Roscos customers to provide them with the key components needed for their carbine/pistol builds at a great combined price. The result is a hand-picked list of parts that will produce...

Faxon Firearms Duty Series, Barrel, 556nato, 10.5", 1:8, Pencil, Carbine Length Gas, Nitride 15a58c10npqModel: Duty SeriesProduct Type: BarrelFinish/Color: NitrideCaliber: 556NATO

Faxon Firearms Duty Series, Barrel, 556nato, 10.5", 1:8, Govt/socom, Carbine Length Gas, Nitride 15a58c10nsqModel: Duty SeriesProduct Type: BarrelFinish/Color: NitrideFit: AR-15Caliber: 556NATO

Faxon Firearms Duty Series, Barrel, 556nato, 11.5", 1:8, Gunner Profile, Mid Length Gas, Nitride 15a58m11ngqModel: Duty SeriesProduct Type: BarrelFinish/Color: NitrideFit: AR-15Caliber: 556NATO

Faxon Firearms Duty Series, Barrel, 556nato, 13.9", 1:8, Gunner Profile, Mid Length Gas, Nitride 15a58m139ngqModel: Duty SeriesProduct Type: BarrelFinish/Color: NitrideFit: AR-15Caliber: 556NATO

Sons Of Liberty Gun Works East India Starter Kit, Complete Upper Receiver, 556nato, Barrel, Carbine Length Gas System, Fits Ar-15, Qpq Finish, Black Eic-11-5-chf-556

Faxon Firearms Arak-21, Complete Upper Receiver, Piston Operated, 7.62x39, 12.5" Barrel, Ambidextrous Ejection, Fits Ar-15, Picatinny Handguard, Black, Includes Bolt Carier Assembly, Magazine Marker Bands And Standard Charging Handle Urssb762pModel:...

Faxon Firearms Duty Series, Barrel, 556nato, 12.5", 1:8, Gunner Profile, Mid Length Gas, Nitride 15a58m125ngqModel: Duty SeriesProduct Type: BarrelFinish/Color: NitrideFit: AR-15Caliber: 556NATO

Faxon Firearms Arak-21, Complete Upper Receiver, Piston Operated, 556nato, 12.5" Barrel, Ambidextrous Ejection, Firs Ar-15, Picatinny Handguard, Black, Includes Bolt Carrier Assembly, Magazine Marker Bands And Standard Charging Handle Urssb556pModel:...

The K9 11.5 offers a proprietary patrol length gas system that is smoother than carbine length, more reliable than mid-length. Features an optimized gas port to run reliably suppressed and/or unsuppressed. The K9 continuous taper is the most effective...

The Rosco Sauce Pack bundles were created after direct requests from Roscos customers to provide them with the key components needed for their carbine/pistol builds at a great combined price. The result is a hand-picked list of parts that will produce...

The Rosco Sauce Pack bundles were created after direct requests from Roscos customers to provide them with the key components needed for their carbine/pistol builds at a great combined price. The result is a hand-picked list of parts that will produce...

The Rosco Sauce Pack bundles were created after direct requests from Roscos customers to provide them with the key components needed for their carbine/pistol builds at a great combined price. The result is a hand-picked list of parts that will produce...

The Rosco Sauce Pack bundles were created after direct requests from Roscos customers to provide them with the key components needed for their carbine/pistol builds at a great combined price. The result is a hand-picked list of parts that will produce...

This Rosco 10.5" M4 5.56 NATO Bloodline Barrel is designed to be the perfect addition to any SBR or Pistol build. The Rosco 5.56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. They are a long way from their daddys...

This 13.7" Rosco barrel is the perfect option for an evenly capable SBR/ RECCE build. It is designed to give the shooter maneuverability at close quarters yet allow them to get first round impact hits as far as 300 yards. The gas system has been designed...

The K9 13.95 features a mid-length gas system with an optimized gas port to run reliably suppressed and/or unsuppressed. The K9 continuous taper is the most effective profile to dissipate heat from hard use. With weight shifted to the back of the barrel,...

The 14.5" M4 5.56 NATO Bloodline Barrel (Mid-Length). This 14.5" M4 5.56 NATO Mid-Length barrel was designed around the USASOC specs for an Improved Upper Receiver Group with a little bit of the Rosco touch as well. The longer gas system allows for a...

Sons Of Liberty Gun Works Combat, V2 Profile, Barrel, 13.7" Barrel, 556nato, Threaded 1/2x28, Mid Length Gas System, Fits Ar-15, Qpq Finish, Black 13-7combatv2-chf-556

Sons Of Liberty Gun Works Combat, V2 Profile, Barrel, 10.5" Barrel, 556nato, Threaded 1/2x28, Carbine Length Gas System, Fits Ar-15, Qpq Finish, Black 10-5combatv2-chf-556

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...

Rosco Manufacturing Purebred, Barrel, 300blk, 8.2", Fits Ar-15, Pistol Length Gas System, Bead Blasted Finish, Silver Pb-82-hb-300blk-7-pModel: PurebredProduct Type: BarrelFinish/Color: Bead BlastedFit: AR-15Description: Pistol Length Gas SystemCaliber:...

Rosco Manufacturing Bloodline Barrel, 9mm, 14.5", Fits Ar-9, Nitride Finish, Black Bl-145-m4-9mm-10Model: BloodlineProduct Type: BarrelFinish/Color: NitrideFit: AR RiflesCaliber: 9MM

Rosco Manufacturing Purebred, Barrel, 223wylde, 14.5", Mid Length Gas System, Bead Blasted Finish, Silver Pb-145-gvt-223w-8-mModel: PurebredProduct Type: BarrelFinish/Color: Bead BlastedFit: AR-15Description: Mid LengthCaliber: 223 Wylde

Geissele Automatics Complete Upper, Super Duty Mod1, 556nato, 10.3" Cold Hammer Forged Barrel, Chrome Lined, 1:7 Twist, Anodized Finish, Desert Dirt Color, Flat Top, Huxwrx Flash Hider-qd Muzzle Device 08-543s

Angstadt Arms Barrel, 9mm, 10.5", Threaded 1/28x28, Fits Ar Platform, Melonite Finish, Black Aa0910bb28

Battle Arms Development Authority Elite, Complete Upper Receiver, 556nato, 10.5" Barrel, Fits Ar-15, M-lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 Ambidextrous Charging Handle And Ar15/m16 Bcg Bad-auth-ur10.5b-y-15

Battle Arms Development Authority Elite, Complete Upper Receiver, 556nato, 10.5" Barrel, Fits Ar-15, M-lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 Ambidextrous Charging Handle And Ar15/m16 Bcg Bad-auth-ur10.5g-y-15

Primary Weapons Systems Mk111 Mod 2-m, Upper Receiver, 7.62x39, 11.85" Barrel, Triad30 Muzzle Device, Anodized Finish, Black, Mlok Handguard, Long Stroke Piston System, Adjustable Gas System, Fits Ar-15 2m111uf01-1f

Primary Weapons Systems Mk107 Mod 2-m, Upper Receiver, 7.62x39, 7.75" Barrel, Cqb 30 Muzzle Device, Anodized Finish, Black, Mlok Handguard, Long Stroke Piston System, Adjustable Gas System, Fits Ar-15 2m107uf01-1f

Primary Weapons Systems Mk114 Mod 2-m, Upper Receiver, 223 Wylde, 14.5" Barrel, No Muzzle Device, Anodized Finish, Black, Mlok Handguard, Long Stroke Piston System, Adjustable Gas System, Fits Ar-15 2m114ua01-2f-nc

Battle Arms Development Workhorse, Complete Upper Receiver, 556nato, 10.5" Barrel, Fits Ar-15, M-lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 Ambidextrous Charging Handle And Ar15/m16 Bcg Wh-ur10.5g-y-15

Battle Arms Development Workhorse, Complete Upper Receiver, 556nato, 10.5" Barrel, Fits Ar-15, M-lok Handguard, Anodized Fi Ish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle And Ar15/m16 Bcg Wh-ur10.5g-y-15c