Drives Senco-type 16-gauge 7/16-inch crown staples from 1 inch to 2 inches long * Powerful piston with Teflon ring design that prevents cylinder bore scuffing * Open top-load magazine with push-button follower accommodates two 70-staple strips or three 50-staple strips * Selectable trigger features restrictive or contact actuation mode * Quick-release nosepiece for easy jam removal