Product Features: <br />Tactical carbine butt stock for M4 and M16 AEG series<br />A drop-in replacement butt-stock for carbines using mil-spec receiver extension tubes<br />Designed for light， fast action<br />The streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation<br />The extra-power lock mechanism uses a premium chrome-silicon spring to avert auto-collapse failure and maintains strength by resisting spring relaxation<br />Comes with a standard butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear<br />Size: 172 x 130 x 35mm/ 6.8 x 5.1 x 1.4in<br />Note: We provide different colors for your choice<br />Package Contents: <br />1 x Butt Stock Gun Stock<br />1 x Butt Pad