Umarex Zelos Features The Umarex Zelos centers its performance on a precharged pneumatic system that stores air in a 250cc onboard tank free floated from the barrel and good for a 3625 PSI max fill. An adjustable regulator housed in the receiver lets shooters tune pressure to their best performing pellets which keeps shot strings consistent instead of tapering off as the tank empties. The 18 round auto-indexing rotary magazine cycles with a smooth side lever action so follow up shots come quickly without breaking a cheek weld. A two-stage adjustable blade trigger lets the shooter set pull weight and break point to their preference which matters when the goal is a precise shot on small game or a pest at distance. The bullpup layout keeps the 26 inch barrel inside a 36 inch overall length giving the Zelos the reach of a longer gun without the bulk an advantage in a blind or moving through brush. A 14.75 inch length of pull and 6.74 lb weight keep the rifle balanced and maneuverable off the bench or shouldered for an extended sit. Mounting is handled by a 21-slot Picatinny rail on top for an optic and an 8-slot Picatinny accessory rail on the tank for a bipod or light covering nearly any setup a shooter wants to run. Muzzle threads under the barrel nut accept aftermarket muzzle devices rounding out a rifle built for hunters and range shooters who care about the details of every shot. Umarex Zelos Specifications Manufacturer: Umarex Model: Zelos Type: Pellet Airgun Rifle Caliber: .25 Capacity: 18+1 Action: Side Lever Single-Action Adjustable Trigger Energy System: PCP (Pre-Charged Pneumatic) Velocity: 1000 FPS Barrel Length: 26 Overall Length: 36 Length of Pull: 14.75 Stock: Bullpup Polymer Color: Black Air Tank: 250cc Onboard Free-Floated 3625 PSI Max Fill Optic Rail: 21-Slot Top Picatinny Accessory Rail: 8-Slot Picatinny on Tank Muzzle Threads: 1/2x20 Country of Origin: Germany Weight: 6.74 lbs Available At: GrabAGun