This Century Arms's heavy duty AK rifle, the VSKA (vis-kuh) has been re-engineered. The VSKA rifle features a bolt carrier, front trunnion, and feed ramp machined from S7 tool steel and specially heat treated for maximum durability. The front trunnion and bolt are machined from billet and exceeded the durability goals for the project. Additionally, the VSKA features a carburized 4140 steel bolt, a chrome-moly 4150 barrel, and sports the RAK-1 Enhanced Trigger Group for an impressive trigger pull.