{"product_id":"wmd-nib-x-bolt-assembly-556","title":"WMD Guns NIB-X Bolt Assembly – AR-15 \/ 5.56 NATO","description":"\u003cp\u003eThe WMD Guns NIB-X Bolt Assembly is a drop-in replacement bolt for AR-15 platform rifles chambered in 5.56 NATO or .223 Remington. This complete assembly includes the bolt, cam pin, and firing pin, all coated with WMD's proprietary Nickel Boron (NIB-X) treatment. Upgrading to a NIB-X coated bolt reduces friction, simplifies cleaning, and improves reliability in adverse conditions compared to standard phosphate or chrome finishes.\u003c\/p\u003e\u003cp\u003eThe NIB-X coating provides exceptional lubricity and corrosion resistance while maintaining precise tolerances. The self-lubricating properties mean less oil is required during operation, and carbon fouling wipes away easily after shooting. This is a direct replacement requiring no gunsmithing—simply disassemble your bolt carrier group and swap components. Ideal for shooters looking to extend bolt life or improve performance in duty, competition, or high-volume training environments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Complete Bolt Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, M16, M4 (5.56 NATO \/ .223 Remington)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel with NIB-X Nickel Boron Coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Nickel Boron (NIB-X)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In (no gunsmithing required)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Bolt, Cam Pin, Firing Pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WMD Guns","offers":[{"title":"Default Title","offer_id":47939837100287,"sku":"WMD1-NIBXBA556","price":66.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/2888082.jpg?v=1766547917","url":"https:\/\/doublestackstore.com\/products\/wmd-nib-x-bolt-assembly-556","provider":"Double Stack Store","version":"1.0","type":"link"}