|Electronic E-Grip Version! Features: Electronic grip system with three electronic modes, including semi auto, three shot burst, and fully safety auto. 15 bps. 9v battery. The Carver One brings added customization and affordability with 4 built-in picatinny rails up front allow for a variety of add-ons including bipods, foregrips, sights, scopes, tactical flashlights, cameras, and other accessories to provide look and function that is unique to your needs. The Carver One comes standard with a horizontal foregrip allowing for tighter prone shooting and a more traditional stance. The all-metal receiver and airline hose ensures durability and quality when making those hard bunker slides. The Carver One accepts all standard US Army and Tippmann 98 shoulder stocks allowing even further customization to give a more stable firing platform. Built in sling mounts allow easy attachment to tactical vests, which frees you up to move easier across the field, provides quick storage if you want to carry a sidearm, or simply a handy place to hang your marker between games. The Carver One is built for a realistic military experience at an affordable price, with an all aluminum die cast receiver, heavy duty stainless steel braided gasline and durable black matte finish. The marker features a high-performance 8.5in 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.