You're looking at a .22 Magnum carbine that with a lot of firepower for a 3.8 lb, semi-auto, collapsible truck gun. It comes out of the box including Magpul sights and ambidextrous, non-reciprocating dual operating handles. This is a straight blow-back tack driver that delivers a ton of fun. There are many roles the CMR30 can fill. It comes standard with Picatinny-style rails built into its aluminum chassis and the barrel is threaded 1/2 - 28 for your choice of muzzle device. We should probably mention that the trigger has a very nice 5 pound break and most of this carbine has ambidextrous features.