The Magpul CTR (Compact/Type Restricted) is a drop-in replacement butt stock for AR15/M16 carbines. 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 minimizes wobble for enhanced weapon stability and accuracy. Includes rubber butt-pad to provide positive shoulder purchase. Specifications and Features:Mil-Spec buffer tube designIncludes standard sling attachment points, and quick detach swivel attachment pointsFriction lock system significantly reduces stock wobble, providing a more consistent cheek weldProtected release latchFlat Dark Earth