{"product_id":"magpul-miad-moe-bolt-firing-pin-storage-core-ar-15-m4-black-polymer","title":"Magpul MIAD\/MOE Bolt \u0026 Firing Pin Storage Core AR-15\/M4 Black Polymer","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eMagpul MAG057 MIAD\/MOE Bolt \u0026amp; Firing Pin Core\u003c\/span\u003e\u003c\/strong\u003e is an internal storage unit that drops into a Magpul pistol grip, turning it into a self-contained carrier for a spare bolt and firing pin. Designed to fit the \u003cstrong\u003eMIAD GEN 1.1 TYPE 1\u003c\/strong\u003e grip as well as the \u003cstrong\u003eMOE\u003c\/strong\u003e and \u003cstrong\u003eMOE-K2\u003c\/strong\u003e pistol grips, this core holds \u003cstrong\u003eone (1) standard AR15\/M4 complete bolt and firing pin\u003c\/strong\u003e in a compact, concealed location inside the rifle.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eBuilt from \u003cstrong\u003edurable black polymer\u003c\/strong\u003e, the storage core adds virtually no bulk to the host grip and keeps essential field-service parts where you need them most. It accepts standard \u003cstrong\u003eAR-15\u003c\/strong\u003e and \u003cstrong\u003eM4\u003c\/strong\u003e pattern bolts and firing pins, making it a smart, low-profile upgrade for any AR-platform rifle or pistol running a supported Magpul grip.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eManufactured in the \u003cstrong\u003eUSA\u003c\/strong\u003e, the \u003cstrong\u003eMAG057\u003c\/strong\u003e is an inexpensive, no-tools way to add redundant fire-control capability to your rifle without carrying a separate spare-parts carrier. Simply swap the grip's standard storage core for this bolt and firing pin core and you're ready to go.\u003c\/span\u003e\u003c\/p\u003e","brand":"Magpul Industries","offers":[{"title":"Default Title","offer_id":54990885421378,"sku":"10203","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_0db49c09-7447-454c-bf9c-3f619ff940b0.png?v=1784191822","url":"https:\/\/centerfiresystems.com\/products\/magpul-miad-moe-bolt-firing-pin-storage-core-ar-15-m4-black-polymer","provider":"Centerfire Systems","version":"1.0","type":"link"}