The Tactical Duostock was developed with CQB (Close Quarters Battle) in mind, and when you find yourself moving through tight confines of a known zombie zone, you’re going to want one of these on the butt end of your carbine of choice. The Complete Assembly comes with everything you need to convert your AR-15/M4 and M-16 family rifles/carbines to a collapsable duostock. Designed for entry work and room clearing to allow fast target acquisition on the move, it increases your accuracy and gives you a stable shooting platform, keeping you safer in the more heavily infested areas.