If you are ready to scratch the itch of of precision pneumatic pellet shooting, look to the Umarex Zelos platform for relief. The Zelos is a bullpup PCP that stuffs 26 inches of barrel into a compact 36 inch package. The natural result of such a long barrel length is power and accuracy with the added convenience of a very easy handling bullpup platform. The Zelos in .22 caliber utilizes a 20 round auto-indexing rotary magazine and features an on-board tank that fills to a maximum pressure of 3625 PSI. This 250cc tank is free-floated from the barrel and fitted with an 8-slot Picatinny accessory rail. Zero in your favorite optic on the 21-slot top Picatinny rail and start sending pellets downrange with precision. In fact, you will be able to easily tune the Zelos to your best perfoming ammo via the reciever-housed adjustable regulator. Feel free to shoot the Zelos the way it comes out of the box or attach an aftermarket muzzle device to the 1/2" X 20 threads found underneath the barrel nut.