Umarex Zelos Features The Umarex USA Zelos fits a full 26 barrel into a 36 bullpup chassis giving the shooter the velocity and accuracy benefits of a long barrel without the length of a traditional rifle stock. The 20-round auto-indexing rotary magazine cycles automatically with each stroke of the side lever keeping the shooter on target through a full magazine without manual indexing. The onboard 250cc air tank fills to a maximum of 3 625 PSI and is free-floated from the barrel which keeps tank pressure changes from affecting point of impact as air is used. An 8-slot Picatinny rail on the tank and a 21-slot Picatinny rail on top give the shooter room to mount a full optic and accessory setup for serious range or field use. A two-stage adjustable trigger lets the shooter dial in the break point for a clean consistent let-off shot after shot. The receiver-housed adjustable regulator allows fine tuning of the air system to whichever pellet performs best squeezing more consistency out of each 12-grain .22 pellet fired at 1 100 fps and 26 ft-lbs of energy. Threads of 1/2x20 beneath the barrel nut accept an aftermarket muzzle device for shooters who want to further customize their setup. At 6.95 lbs with a polymer bullpup stock the Umarex USA Zelos balances power accuracy and a compact footprint for precision pneumatic pellet shooting. Umarex Zelos Specifications Manufacturer: Umarex Model: Zelos Type: Pellet Airgun Rifle Caliber: .22 Cal Capacity: 20+1 Action: Side Lever Power Type: PCP Max Fill Pressure: 3625 PSI Velocity: 1100 fps Barrel Length: 26 Overall Length: 36 Trigger: Two-Stage Adjustable Stock Type: Bullpup Stock Material: Polymer Mounts: Picatinny Rail Weight: 6.95 lbs Available At: GrabAGun