Description
The Radical Firearms 16″ M4 Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to your Mil-Spec AR-15 lower receiver. This fully mil-spec compliant receiver provides a high-quality upper for any level budget or shooter. It comes complete and assembled with upper receiver, forward assist, ejection port door, and barrel nut. The free-float handguard Forward Guard Shield (FGS) keeps your hands cool and provides plenty of room for accessories. The FGS rail even has the capability to add attachments other than on the top picatinny rail, as it does allow Magpul Moe attachments and rail sections. Type Complete Gas Impingement Caliber 223 Remington/5.56 NATO Sights None (Optic Ready) Barrel Length 16″ Barrel Material 4150 Chrome Moly Vanadium Steel Twist 1:7 Barrel Description M4 Profile Barrel Finish Black Receiver Description 7075-T6 Aluminum M4 Receiver Finish Black Handguards 12″ FHR Handguard Finish Black Hard Coat Anodized Barrel Length Range 16.00″ to 17.99″