Crosman Phantom NP Air Rifle Features Crosman Nitro Piston powerplant Breakbarrel Single-shot No open sights 11mm grooved dovetails Black synthetic Monte Carlo stock 2-stage adjustable trigger Ambidextrous Muzzlebrake for additional cocking leverage Textured grip and forearm 6.4 lbs. (without the scope and mount) Includes 4x32 scope- lens covers and mount (unmounted) Here are the benefits of a gas-piston over a spring-piston powerplant Smoother cocking Smoother shooting No spring torque No spring fatigue- even if you leave it cocked for hours Functions perfectly in cold weather Lasts longer than a metal spring