GEN-4 NF-15 PISTON
.223 Wylde chamber, S.M.A.A.R.T. Infinitely adj. GPO, 16 in. McGowen HBAR match stainless steel barrel with black Nitride coating and Barnes Precision A2 enhanced flash hider, Gen-4 Mil-Spec T6 forged or Gen-4 Mil-Spec billet lower receiver...