The CQB stock is a proven, billet machined, high quality, collapsible stock system for the AR15. Known for reliability and functionability the Maxim CQB will convert any AR15 and Pistol Caliber Carbine into a more compact battle rifle. At its most collapsed position, this CQB stock only adds 5.35” to your AR15. At full extension, the Maxim CQB stock is the length of an extended carbine stock. And with 4 total positions you can adjust for maximum comfort and multiple scenarios. Rapid deployment, purpose driven materials, and the functionality you need, the Maxim Defense CQB Stock is simply the most thought out, versatile, and durable CQB stock on the market.