Light weightand larger piston for increased powerful One-touch easy opening hard magazine. Combination trigger wiht lock Avai Quick and easy pushing follower for fast loadingSingle firing safe system for safe operationAlu-alloy with hard-surface treatment magazineSide view windowsAPPLICATION:Finish constructionWood , steel or concreteFloorings,Wall,Roof sheathingDoor& Window unitsCabinet framing ...