{"product_id":"yhm-dust-cover-assy-556-nato","title":"Yankee Hill Machine Co Dust Cover Assembly – AR-15\/M16 (5.56 NATO)","description":"\u003cp\u003eThe YHM Dust Cover Assembly is a direct replacement ejection port cover for AR-15 and M16 pattern rifles chambered in 5.56 NATO. This assembly keeps dirt, debris, and moisture out of the upper receiver when the rifle is not in use or during transport. A functional dust cover is essential for maintaining reliability in adverse conditions—sand, mud, and rain can compromise feeding and extraction if contaminants enter the action.\u003c\/p\u003e\u003cp\u003eConstructed from mil-spec materials with a phosphate finish for corrosion resistance, this assembly includes the cover, spring, and C-clip for complete installation. Installation is straightforward and requires no gunsmithing—simply remove the old cover and install this unit following standard AR-15 assembly procedures. The spring-loaded design snaps open automatically when the charging handle is pulled.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Ejection Port Dust Cover Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, M16, and other AR-pattern rifles in 5.56 NATO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Phosphate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In (basic armorer knowledge recommended)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Dust cover, spring, C-clip\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yankee Hill Machine Co","offers":[{"title":"Default Title","offer_id":47940886266111,"sku":"YHM-111-556","price":15.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1314115.jpg?v=1766568765","url":"https:\/\/doublestackstore.com\/products\/yhm-dust-cover-assy-556-nato","provider":"Double Stack Store","version":"1.0","type":"link"}