AR-15 223 Remington/5.56 NATO 16-Inch M4 Upper, Black Md: CFU16556M415

Radical Firearms AR-15 223 Remington/5.56 NATO 16-Inch M4 Upper, Black Md: CFU16556M415


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 Finish: Black Melanite

Receiver Description: 7075-T6 Aluminum M4

Receiver Finish: Black

Handguards: 15" FGS

Handguard Finish: Black Hard Coat Anodized

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