{"product_id":"santan-ar15-enhncd-bcg-556-ntrd-blk","title":"San Tan Tactical Enhanced AR-15 Bolt Carrier Group – 5.56 NATO, Nitrided Black","description":"\u003cp\u003eThe San Tan Tactical Enhanced AR-15 Bolt Carrier Group is a drop-in replacement designed to improve reliability and extend service life in your 5.56 NATO or .223 Wylde AR-15. This BCG features upgraded internal geometry and a properly staked gas key to ensure consistent cycling across a wide range of ammunition and environmental conditions. Ideal for shooters looking to upgrade from a factory BCG or replace worn components with a durable, mil-spec alternative.\u003c\/p\u003e\u003cp\u003eConstructed from 8620 steel with a salt bath nitride finish, this BCG offers superior corrosion resistance and reduced friction compared to standard phosphate finishes. The nitriding process hardens the entire surface, not just a coating, which extends wear intervals and simplifies cleaning. This is a drop-in part compatible with mil-spec AR-15 upper receivers—no gunsmithing required. Properly torqued gas key screws and a correctly shaped cam pin ensure reliable lockup and extraction.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Bolt Carrier Group\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, 5.56 NATO, .223 Wylde\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 8620 Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Salt Bath Nitride (Black)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Bolt Carrier, Bolt Assembly, Cam Pin, Firing Pin, Retaining Pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"San Tan Tactical","offers":[{"title":"Default Title","offer_id":47939754819839,"sku":"STTENHANCEDBCG556","price":181.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1338394.jpg?v=1766546433","url":"https:\/\/doublestackstore.com\/products\/santan-ar15-enhncd-bcg-556-ntrd-blk","provider":"Double Stack Store","version":"1.0","type":"link"}