ACS M4 Carbine Collapsible Butt-Stock Military Model The patent-pending Magpul ACS (Adaptable Carbine/Storage Military Model) is a drop-in replacement butt-stock for carbines using mil-spec receiver extension tubes. A streamlined, anti-snag profile shields the release latch to prevent accidental activation and the extra-power lock mechanism uses a premium chrome-silicon spring to avert auto-collapse failure by resisting spring relaxation. Similar to the CTR, the ACS also features a supplemental friction lock system that eliminates wobble for enhanced weapon stability and accuracy. Dual, rear accessible, water-resistant battery storage tubes and an integral storage compartment in the butt of the stock provides multiple storage options. The ACS comes standard with a rubber butt-pad which gives positive shoulder purchase to prevent slippage even with body armor or modular gear.
We do not stock the Commercial version of this stock. If you need the Commercial version please call.