{"product_id":"kns-precision-perma-firing-pin-retaining-pin-ar-15-m16-black","title":"KNS Precision PERMA Firing Pin Retaining Pin AR-15\/M16 Black","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eKNS Precision PERMA Firing Pin Retaining Pin\u003c\/span\u003e\u003c\/strong\u003e is a drop-in upgrade for the standard \u003cstrong\u003ecotter pin\u003c\/strong\u003e found inside the \u003cstrong\u003eAR-15\/M16 bolt carrier\u003c\/strong\u003e to retain the firing pin, just as on original Stoner-pattern rifles. Where the factory split cotter pin can vibrate loose, snag on a magazine or dust cover, or shear under hard use, the PERMA Pin is a single solid retainer that stays put.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eMachined from \u003cstrong\u003esolid tool steel\u003c\/strong\u003e and finished in a corrosion-resistant \u003cstrong\u003eblack nitride\u003c\/strong\u003e coating, the PERMA Pin is built to mil-spec tolerances and installs in seconds with no modification to the carrier. Its low-profile, flat-cap head keeps the retainer tucked safely inside the bolt so it cannot catch on magazines, the dust cover, or gear during firing or handling.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe PERMA Pin is designed to fit any standard mil-spec \u003cstrong\u003eAR-15 bolt carrier\u003c\/strong\u003e and is \u003cstrong\u003enot\u003c\/strong\u003e compatible with \u003cstrong\u003e.308\u003c\/strong\u003e \/ AR-10 bolt carrier groups. It is a direct fit replacement for the factory cotter pin and an ideal upgrade for any AR-15 or M16 rifle, carbine, or pistol build where reliable firing pin retention matters.\u003c\/span\u003e\u003c\/p\u003e","brand":"KNS Precision","offers":[{"title":"Default Title","offer_id":55334991626562,"sku":"PERMA","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/alt_f3ac03d5-8e5c-4ebb-9266-965a2fefac60.jpg?v=1785169546","url":"https:\/\/centerfiresystems.com\/products\/kns-precision-perma-firing-pin-retaining-pin-ar-15-m16-black","provider":"Centerfire Systems","version":"1.0","type":"link"}