Holds one AR15/M4 bolt and firing pin

Internal core unit for the MIAD, MOE, and MOE-K2 Grips*. Designed to hold one (1) standard AR15 / M4 complete bolt and firing pin (not included). Made in the USA HOLDS ONE STANDARD AR15 / M4 COMPLETE BOLT AND FIRING PIN INTERNAL CORE UNIT FOR THE MIAD, MOE, AND MOE-K2 GRIPS Technical Specifications Platform: AR10, AR15, M4, M16, M110, SR25 *NOTE: The Bolt & Firing Pin Storage Core is not recommended for use with the MOE or MOE-K2 Grips due to its slightly smaller internal dimensions required by the rubber overmolding.