Magpul Bolt & Firing Pin Storage Core Grip Insert for MIAD MOE MOE-K2 Grips – AR15/M4 Bolt Storage, Black (MAG057-BLK)

• Bolt and firing pin storage core insert for Magpul MIAD and MOE grips
• Fits MIAD, MOE, and MOE-K2 pistol grips for internal parts storage
• Holds one standard AR15/M4 complete bolt and firing pin securely inside grip
• Internal core design provides compact storage for critical spare bolt components
• Magpul MIAD/MOE Storage Core accessory in black for grip compartment use
• Designed for convenient transport of AR15 bolt group parts during maintenance support

The Magpul Industries MIAD/MOE Bolt & Firing Pin Core is a pistol grip storage core designed for internal storage of AR15/M4 bolt and firing pin components. This storage core holds one standard AR15/M4 complete bolt and firing pin and installs inside compatible MIAD, MOE, and MOE-K2 grips.

The Magpul Industries MIAD/MOE Bolt & Firing Pin Core features a black polymer construction and is configured as an internal grip accessory for supported Magpul grip systems. This product is used for organizing and protecting small rifle components within the grip cavity. It is designed to fit MIAD, MOE, and MOE-K2 grips using a drop-in core interface. In practical use, the compact internal design maintains external grip dimensions while adding storage capability. The unit functions as a dedicated bolt and firing pin holder, providing a defined storage space inside the pistol grip for field carry or range use.