5.56 NATO

Radical Firearms, RF-15, Semi-automatic, Pistol, 223 Remington/5.56 NATO, 10.5″ Barrel, M4 Contour 1:7 Twist, Black, B5 Type 23 Pistol Grip, Pistol Tube, 30 Rounds, 1 Magazine, A2 Flash Hider, 10″ RPR M-LOK Handguard