Magpul MAG057-BLK AR15/M4 Bolt & Firing Pin Storage Core Black for MIAD, MOE, and K2 Grips
Internal core unit for the MIAD as well as the MOE® and MOE-K2® Grips* designed to hold one (1) standard AR15/M4 complete bolt and firing pin.
Made in U.S.A.
*NOTE: The Bolt & Firing Pin Storage Core is not recommended for use with the MOE+® Grip due to its slightly smaller internal dimensions required by the rubber overmolding.
***Bolt and Firing Pin Not Included***