***Please select your options on the right hand side for BCG, Charging Handle, and other choices***
The Radical Firearms M4 Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any MIL-STD AR-15 lower receiver! This fully MIL-STD compliant receiver provides a high-quality upper for any level budget or shooter. Comes complete and assembled with Upper Receiver, Forward Assist, Ejection Port Door, Barrel Nut. 16" M4 Profile Barrel and A2 Flash Hider. Bolt Carrier Group and Charging Handle are additional and are offered at discounted prices in the drop down menus.
- 16” 4140 Chromoly Barrel With Melonite Coating
- 5.56 M4 Profile
- M4 Feed Ramps
- 1:7 Twist Rate
- A2 Flash Hider
- 1/2x28 TPI
- Low Profile Gas Block
- Carbine Length Gas System
- Radical Firearms Forged MIL-STD Upper Receiver
- MIL-STD Upper Parts Kit
- RF Dimpled Forward Assist
- Radical Firearms 12” FQR
- Quad Picatinny Rails The Full Length of the Rail
- Made in Houston, Texas U.S.A.!