{"product_id":"abc-ar15-300-blackout-micro-pistol-upper-assembly-5-barrel-custom-4-mlok-handguard-gold-ua300b-br5-ml4hs-gld","title":"AR15 .300 Blackout Micro Pistol Upper Assembly 5\" Barrel Custom 4\" MLOK Handguard - Gold","description":"\u003cdiv class=\"productSpecs\"\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eBuilt for close-quarters dominance, this 5” .300 Blackout upper receiver group combines compact form with serious firepower. It features a precision-machined 6061-T6 billet upper paired with a matching 4” ABC Rifle Co M-LOK handguard with integrated handstop and steel barrel nut. The 4150 CMV barrel sports a 1:7 twist for optimal subsonic or supersonic performance, paired with a micro-length stainless gas tube, .750 low-profile steel gas block, and 5\/8x24 steel muzzle brake. Includes milspec ejection port cover, forward assist, and forged 6061-T6 milspec charging handle\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top: 40px;\"\u003eUpper Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style: circle;\"\u003e\n\u003cli\u003e6061-T6 Aluminum Billet Upper Receiver w\/ Milspec Tolerances\u003c\/li\u003e\n\u003cli\u003e6061-T6 Aluminum ABC Rifle Co 4” MLOK Handguard w\/ Integrated Handstop\u003c\/li\u003e\n\u003cli\u003eSteel Barrel Nut\u003c\/li\u003e\n\u003cli\u003e4150 Chrome Moly Vanadium 5” 1:7 Twist .300 BLK Barrel\u003c\/li\u003e\n\u003cli\u003e.750 Low Profile Steel Gas Block\u003c\/li\u003e\n\u003cli\u003eStainless Steel 5 3\/16” Micro Gas Tube\u003c\/li\u003e\n\u003cli\u003e5\/8x24 Steel Muzzle Brake\u003c\/li\u003e\n\u003cli\u003eMilspec Stamped Steel Ejection Port Cover\u003c\/li\u003e\n\u003cli\u003eMilspec Forward Assist\u003c\/li\u003e\n\u003cli\u003eForged 6061-T6 Aluminum Milspec Charging Handle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"margin-top: 40px;\"\u003eGeneral Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style: circle;\"\u003e\n\u003cli\u003eWeight:\u003c\/li\u003e\n\u003cli\u003eOverall Length:\u003c\/li\u003e\n\u003cli\u003eCaliber: .300 Blackout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: center; margin-top: 40px;\"\u003e\n\u003cp style=\"text-align: center; background-color: #ffff00; padding: 6px; border-radius: 3px; font-size: 9px;\"\u003eBilling and Shipping address MUST match the address that is on file with your Financial Institution or the order will be canceled and a $25 cancellation fee deducted from your refund. \u003c\/p\u003e\n\u003cp style=\"font-size: 9px;\"\u003eDigital representations of Cerakote colors may vary due to lighting, screen settings, and image processing. For the most accurate color reference, consult official Cerakote color samples.\u003c\/p\u003e\n\u003cp style=\"font-size: 9px;\"\u003e\u003cstrong\u003eNOTE:  ALL CUSTOM COATINGS ARE INSPECTED PRIOR TO SHIPMENT.  ABC RIFLE COMPANY WILL NOT BE HELD LIABLE FOR ANY SCRATCHES, BLEMISHES, DINGS , ETC....  \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ABC Rifle Co.","offers":[{"title":".223\/5.56 NATO Milspec Nitride Bolt Carrier Group","offer_id":48149486239905,"sku":"UA300B-BR5-ML4HS-GLD-223556NATO","price":399.98,"currency_code":"USD","in_stock":true},{"title":".223\/5.56 NATO Milspec Nickel Boron Bolt Carrier Group","offer_id":48149486370977,"sku":"UA300B-BR5-ML4HS-GLD-223556NATO","price":429.98,"currency_code":"USD","in_stock":true},{"title":".223\/5.56 NATO Polished Nickel Boron Bolt Carrier Group","offer_id":48149486403745,"sku":"UA300B-BR5-ML4HS-GLD-223556NATO","price":479.98,"currency_code":"USD","in_stock":true},{"title":"No BCG","offer_id":48149486436513,"sku":"UA300B-BR5-ML4HS-GLD-NOBCG","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/8408\/1057\/files\/ua300b-br5-ml4hs-gld.png?v=1792475943","url":"https:\/\/kilo1sixarms.shop\/products\/abc-ar15-300-blackout-micro-pistol-upper-assembly-5-barrel-custom-4-mlok-handguard-gold-ua300b-br5-ml4hs-gld","provider":"KILO 1 SIX ARMS","version":"1.0","type":"link"}