Uses compressed air: 2,000 to 3,000 psi (make adjustments as shown in the owner's manual). Can be adjusted for different velocities. Internal shroud makes this a VERY quiet gun.Choked barrel delivers superior accuracy. 2-stage adjustable match trigger -- and the trigger is metal! Raised aluminum breech for easier loading of circular magazine. Magpul M-LOK slotted all-metal handguard with 15 of Picatinny rail space. Machined receiver with 5 of Picatinny rail space. AR-15 pistol grip and telescopic buttstock. Sling-ready (there's a sling slot in the buttstock and a sling attachment point where the bipod is mounted). Reversible bolt -- switch from right to left side (with our special service). Built-in air pressure gauge (manometer). Air reservoir ends with a male quick-disconnect Foster fitting for fast refills (requires a female Foster quick-disconnect adapter to fill from a scuba tank or hand pump). Officially licensed rifle for the Magpul M-LOK modular accessory system. 25 Cal PCP Air Rifle with Vortex Viper Scope and Unique Stock" is in sale since Tuesday, December 31, 2019. This item is in the category "Sporting Goods\Outdoor Sports\Air Guns & Slingshots\Air Rifles". The seller is "docnartman-5" and is located in Woodland, California. This item can be shipped to United States.