The Magpul CTR (Compact/Type Restricted) Mil-Spec model is a drop-in replacement buttstock for AR15 / M16 carbines. It is designed for light, fast action with a streamlined A-frame profile that avoids snagging and minimizes excessive stock movement. This model features a supplemental friction lock system, ambidextrous QD sling mount, and a rubber butt-pad for positive shoulder purchase, ensuring dependability and comfort when in use.