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.223 / 5.56 .300
7.62 x 39

Shop Firearms Barrel Assembly

Your firearms’ barrelled upper assembly is a crucial component of you rifle or custom build. Whether you are building an AR Pistol or and AR Rifle, we have the upper receiver you are looking for. We offer upper receivers in 7.5", 10.5", 16", 18", and 20". Most of our rifles are equipped with free float rail systems to maintain accuracy while reducing the profile and weight of the upper receiver. We build some uppers in house and also act a distributor for other companies such as Radical Firearms, Troy Industries, Anderson Manufacturing, Aero Precision, Bravo Company, Stag Arms, etc. We offer uppers in 5.56, .223, .300 blackout, 7.62x39, .458 socom, etc. If you don't see the one you like, pick up the phone and call us! We will be happy to place a custom order or build you one!

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16" Radical Firearms 5.56 w/ 12" FTR Keymod Rail
16" Radical Firearms 5.56 w/ 12" FTR Keymod Rail
Our Price: $229.00
In Stock

The Radical Firearms 16” 5.56 NATO M4 Barreled Upper Receiver is a law enforcement grade, drop-in solution for your next AR build. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC upper receiver provides an outstanding solution for any budget. Finish the build with your favorite lower receiver, charging handle, bolt carrier group, and sights then head for the range!

Includes the Radical Firearms First-Gen Thin Rail System, an ultralight and slim free float handguard for the AR-15. Features large cooling holes, multiple sling attachment locations, and a suppressor friendly internal diameter. Reversed KeyMod slots allow for superior mounting strength compared to traditional KeyMod cuts.

Features:
  • 16" 41V50 chrome moly vanadium steel M4 contour barrel
  • Chambered in 5.56 NATO with 1:7 twist rate
  • 1/2x28 A2 flash hider
  • 12" free float Radical Firearms FTR rail
  • Made in the U.S.A. in Stafford, Texas!

NOTE: This barreled upper does not include a bolt carrier group or charging handle.
7.5" Radical Firearms 5.56 w/ 7" M-LOK FCR Rail
7.5" Radical Firearms 5.56 w/ 7" M-LOK FCR Rail
Our Price: $249.00
In Stock


NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR-15 pistols or legal short-barreled rifles. Other configurations may violate Federal law.


Does not include bolt carrier group or charging handle.


The Radical Firearms 7.5" 5.56 NATO M4 Barreled Upper Receiver is a law enforcement grade, drop-in solution for your next AR build. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC upper receiver provides an outstanding solution for any budget. Arrives at your door with the hard work done. Complete this build with your favorite lower receiver, bolt carrier group, charging handle, and sights, then head for the range!

The Radical Firearms FCR system is a slim handguard that provides the weight savings you want without sacrificing any of the mounting possibilities you require. This freefloat design offers a monolithic Picatinny rail and plenty of M-LOK attachment points for all your gear.

10.5" Radical Firearms .300 w/ 10" M-LOK FCR Rail
10.5" Radical Firearms .300 w/ 10" M-LOK FCR Rail
Our Price: $249.00
In Stock

Barrel - Contour HBAR
Barrel Coating - Salt Bath Nitride

Barrel Length - 10.5” 1/8 Twist

Barrel Lining - Salt Bath Nitride

Barrel Material - 41V50 Chrome Moly Vanadium Steel

Brand - Radical Firearms

Caliber Gauge - .300

Gas System Length - Pistol

Gas System Type - Direct Impingement

Handguard - 10 Radical M-LOK FCR Rail

Muzzle Device - A2 Flash Hider

Thread Pattern - 5/8-24

10.5" Radical Firearms 5.56 w/ 10" M-LOK FCR Rail
10.5" Radical Firearms 5.56 w/ 10" M-LOK FCR Rail
Our Price: $249.00
In Stock

NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR-15 pistols or legal short-barreled rifles. Other configurations may violate Federal law.


Does not include bolt carrier group or charging handle.

The Radical Firearms 10.5" 5.56 NATO M4 Barreled Upper Receiver is a law enforcement grade, drop-in solution for your next AR build. Crafted with quality materials and covered by Radical’s lifetime warranty, this MIL-SPEC upper receiver provides an outstanding solution for any budget. Arrives at your door with the hard work done. Complete this build with your favorite lower receiver, bolt carrier group, charging handle, and sights, then head for the range!

The Radical Firearms FCR system is a slim handguard that provides the weight savings you want without sacrificing any of the mounting possibilities you require. This freefloat design offers a monolithic Picatinny rail and plenty of M-LOK attachment points for all your gear.

16" Radical Firearms 300 Blackout w/ 15" M-LOK FCR Rail
16" Radical Firearms 300 Blackout w/ 15" M-LOK FCR Rail
Our Price: $249.00
(Out of Stock)

Barrel CoatingSalt Bath Nitride
Barrel ContourHBAR
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge300 BLK
Gas System LengthPistol
Gas System TypeDirect Impingement
Handguard15 Radical M-LOK FCR Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern5/8 X 24
Twist Rate1:8
7.5" .556 UPPER-ODG
7.5" .556 UPPER-ODG
Our Price: $265.00
In Stock

-Anderson Upper Receiver
-7.5" Bear Creek Arsenal Barrel
-1/7 Twist
-7" Ultra Thin Lightweight M-LOK
-Pistol Length Gas System
7.5" .556 UPPER-FDE
7.5" .556 UPPER-FDE
Our Price: $265.00
In Stock

-Anderson Upper Receiver
-7.5" Bear Creek Arsenal Barrel
-1/7 Twist
-7" Ultra Thin Lightweight M-LOK
-Pistol Length Gas System
7.5" .556 UPPER-BLK
7.5" .556 UPPER-BLK
Our Price: $265.00
In Stock

-Anderson Upper Receiver
-7.5" Bear Creek Arsenal Barrel
-1/7 Twist
-7" Ultra Thin Lightweight M-LOK
-Pistol Length Gas System
10.5" .556 UPPER-BLK
10.5" .556 UPPER-BLK
Our Price: $265.00

-Anderson Upper Receiver
-10.5" Bear Creek Arsenal Barrel
-1/7 Twist
-9" Ultra Thin Lightweight M-LOK
- Carbine length Gas system
10.5" .556 UPPER-FDE
10.5" .556 UPPER-FDE
Our Price: $265.00
In Stock

-Anderson Upper Receiver
-10.5" Bear Creek Arsenal Barrel
-1/7 Twist
-9" Ultra Thin Lightweight M-LOK
- Carbine length Gas system