Build a great modern sporting rifle with this complete AR-15 upper assembly from Radical Firearms. It features a 16" 4150 chrome moly vanadium steel M4 contour barrel with an inside and out harder-than-chrome nitride finish and mil-spec A2 flash hider. The upper is equipped with a low profile gas block and a 12" Radical Firearms free float FGS (forward guard shield) handguard. It comes complete with forward assist, bolt carrier group and charging handle.

Specifications and Features
Radical Firearms CFU16-5.56M4-12FGS
5.56 NATO (accepts .223 Remington)
16" 4150 CMV steel barrel, M4 profile, nitride finished
Mil-spec A2 flash hider
1:7" twist
M4 feed ramps
12" Radical Firearms billet FGS handguard
Low profile gas block
Forward assist
Complete bolt carrier group
Charging handle
Shell deflector