The Carver One eGrip comes complete with three electronic modes, including semi auto, three shot burst and full safety auto. The marker is built for a realistic military experience at an affordable price. With an all aluminum die cast receiver, heavy duty braided stainless steel gas line and durable black matte finish. The marker features a high performance 8 1/2 inch quick thread barrel and in-line bolt system, plus four picatinny rails for customization, a built-in foregrip and built-in sights and sling mounts.