Introducing the Core M CP, featuring a built-in concealed magazine carrier compatible with standard 5.56x45mm (.223 Rem) AR-15/M16/M4 and FAB Defense Ultimag magazines. Designed for precision and multiple engagements, the FAB Defense Survival AR-15 butt-stock includes a built-in 10-round magazine carrier and adjustable cheek piece. The Core M AR-15 stock incorporates an innovative Anti-Rattle mechanism to secure firmly onto AR-15 tubes, minimizing unnecessary noise. Its high-quality rubber butt-pad prevents slipping during shooting, enhancing stability on the shooter's shoulder. Compatible with both Mil-Spec and commercial tubes, it ensures reliable performance in various setups.