The CMR-30(TM) is a lightweight auto-loading firearm that accepts the 30 round magazines originally developed for the PMR-30(TM) pistol. The safety, magazine catch, stock latch, and non-reciprocating operating handles are accessible from both sides of the firearm. The collapsible stock pulls out and adjusts to 5 separate positions to accommodate a wide range of users. The CMR-30(TM) features a rigid aluminum upper assembly that houses the nitrided barrel and a long Picatinny rail for mounting of sights, optics, or other accessories. This rigid mounting, and a lock time better than most bolt action rifles, allows for excellent accuracy. The end of the barrel is threaded A 1/2"-28 to accept a wide range of muzzle devices. The lower Picatinny rail allows for the mounting of forward grips or other accessories, but is also removable if preferred. The standard CMR-30(TM) is chambered for 22 Winchester Magnum Rimfire ammunition, also known as 22WMR or simply 22 Magnum. The caliber is marked on the firearm. Do not use any other caliber or designation of ammunition.