Benjamin Trail NP (Nitro Piston) XL Air Rifle Breakbarrel Gas piston Bull barrel Ambidextrous stock with twin cheekpieces Textured grip & forearm 70% quieter than most other breakbarrels! Includes unmounted CenterPoint Optics 3-9x40AO scope Sling swivel studs already mounted Hardwood stock 9.70 lbs. with included scope & mount; 8.50 lbs. for just the gun (we've found that the weight can vary as much as 8 oz. due to fluctuations in wood densities) The video on this page states it comes with a sling. It does not come with one. If you shoot a lightweight pellet so its velocity exceeds the speed of sound, it could result in your pellet breaking the sound barrier and the gun being louder than expected! The speed of sound depends on humidity, temperature and altitude. Generally speaking, it's between 1,060 fps and 1,115 fps. Here are the benefits of the Crosman Nitro Piston: 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 The owner's manual states that the .25-caliber rifle delivers 950 fps. That's a misprint. The max is 900 fps.