Benjamin BTAP25SX Armada PCP Powered Multi-Shot Bolt Action 25 Cal Hunting Air Rifle with M-LOK Interface & Bipod Modular, versatile design Backwards compatible with Mil-Spec AR-15 grips and stocks Machined receiver featuring 5 inches of Picatinny rail space Delivers up to 16 consistent shots per fill. Barrel Type : Rifled/Shrouded/Choked Bolt action is reversible