Action: Semi Auto – Caliber: .22 LR – Capacity: 25 – Finish: Black – Stock: Under Folding/Collapsible – Twist: 1:16 – Barrel Length: 16.1 – Overall Length: 34 – Weight: 4 lb – The SU-22 rifle is chambered for the popular and economical .22 Long Rifle cartridge (.22LR). It is based on the 5.56mm NATO chambered SU-16 rifle and shares many parts including the grip and front and rear sights. The SU-22 is not a simple conversion kit it is a standalone firearm chambered for the .22LR and is designed for target shooting plinking or small game hunting. The SU-22 operates by blowback action and has a 4140 steel bolt that rides on steel guide rails inside the polymer receiver. The ejector is attached to one of the guide rails and the recoil spring is located above the barrel. The cross-bolt safety and magazine release operate identically to the SU-16. – The SU-22 will accept many of the same accessories as the SU-16 including the slings stocks and compact forend. The rear sight is adjustable for windage and the front sight is adjustable for elevation. An integrated picatinny rail on top will accept a multitude of sighting options. The muzzle end of the barrel is threaded ½-28 to accept standard attachments such as a muzzle brake. A 26 round semi-transparent magazine is included and it will accept magazines designed for the Atchison M-16 conversion.