Knights Armament Company SR-15 CQB Mod2 M-LOK Complete Upper 5.56 NATO 11.5″

Barrel: 11.5″ (29 cm) 1:7 Twist, Hammer Forged, Chrome Lined
Caliber: 5.56 NATO
Weight: 3.8 lbs (1.7 kg)
Length: 20.5″ (52 cm) OAL