{"product_id":"cmmg-bbl-300blk-8-4140cm-sbn","title":"CMMG - 8\" MT 4140CM SBN Barrel for .300 BLK","description":"\u003cp\u003eThe \u003cb\u003eCMMG 8\" MT 4140CM SBN Barrel\u003c\/b\u003e is an excellent choice for building your custom AR15 upper group. This barrel sub-assembly is crafted from durable 4140CM steel and features a Salt Bath Nitride (SBN) finish for enhanced durability and corrosion resistance. With a properly installed M4 barrel extension, this barrel ensures reliable performance and is properly headspaced for optimal function.\u003c\/p\u003e\u003cp\u003eDesigned specifically for the .300 BLK caliber, this barrel includes a pistol-length gas port location and a 1:7 barrel twist, making it ideal for stabilizing a wide range of bullet weights. The muzzle is threaded at 5\/8x24, allowing for the attachment of various muzzle devices. Please note that all NFA rules apply when using this barrel.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCaliber:\u003c\/b\u003e .300 BLK\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBarrel Length:\u003c\/b\u003e 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBarrel Material:\u003c\/b\u003e 4140CM steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Salt Bath Nitride (SBN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGas Port Location:\u003c\/b\u003e Pistol\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBarrel Twist:\u003c\/b\u003e 1:7\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMuzzle Thread:\u003c\/b\u003e 5\/8x24\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGas Block Diameter:\u003c\/b\u003e 0.750 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight:\u003c\/b\u003e 1.3 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eSpecifications\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Barrel\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBarrel Contour:\u003c\/b\u003e MT\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProduct UPC:\u003c\/b\u003e 815835016283\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eManufacturers Part Number:\u003c\/b\u003e 30D810A\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSubCategory:\u003c\/b\u003e Barrels\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CMMG","offers":[{"title":"Default Title","offer_id":47391112364121,"sku":"RSR-CMMG30D810A","price":213.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/9860\/2329\/files\/cmmg_RSR-CMMG30D810A-1.jpg?v=1791361972","url":"https:\/\/mountainready.online\/products\/cmmg-bbl-300blk-8-4140cm-sbn","provider":"mountainready.online","version":"1.0","type":"link"}