Century Arms C308 is a 7.62x51 rifle built around the roller-lock delayed blowback system. Features an 18” chrome moly 4140 barrel with 5/8x24 RH threads and a proprietary Chevron muzzle brake. Includes a fluted chamber for reliable cycling and extraction, original wood furniture, and a receiver mounted picatinny rail for mounting optics. The C308 accepts G3 and CETME magazines. Comes with two 20 round magazines.