The VSKA rifle features an all new bolt carrier front trunnion and feed ramp machined from S7 tool steel and specially heat treated for maximum durability. S7 often referred to as a Shock-Resisting Tool Steel is commonly used for tools like chisels and jackhammer tips as it has maximum shock resistance and high compression strength while retaining toughness. 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. Manganese-phosphate finish and AKM compatible black polymer furniture. Includes one 30-round magazine. Made in the USA. DETAILS AK-47 Semi Automatic Rifle 7.62x39mm 30 Rounds 16.5 Chrome Moly 4150 Barrel Nitride Treated with 110 Twist 116 Stamped Steel Receiver Standard AKM Sights RAK-1 Enhanced Trigger Group Carburized 4140 Steel Bolt Heat Treated S7 Steel Bolt Carrier Feed Ramp and Front Trunnion Bolt Hold-Open Notch on Safety Selector Accepts Standard AK Mags Polymer Furniture Black Finish Overall Length 37.25 Weight 7.8 lbs 100 American Made