![Magpul SL-S Mil Spec Stock Black Magpul SL-S Mil Spec Stock Black](https://cdn11.bigcommerce.com/s-vcwqbtp/images/stencil/300x300/products/377/1317/MPIMAG653-BLK_1_HR__75123.1702325244.jpg?c=2)
The patent-pending Magpul CTR (Compact / Type Restricted Military Model) is a drop-in replacement butt stock for carbines using mil-spec receiver extension tubes. Designed for light, fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation. The extra-power lock mechanism uses a premium chrome-silicon spring to avert auto-collapse failure and maintains strength by resisting spring relaxation. The CTR also features a supplemental friction lock system that eliminates wobble for enhanced weapon stability and accuracy. The Military Model includes a standard 0.30-Inch rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.