{"product_id":"bushmaster-qrc-complete-ar-15-upper-5-56-nato-16-in-black-nitride-m-lok-handguard-0040017blk","title":"Bushmaster QRC Complete AR-15 Upper 5.56 NATO 16 in Black Nitride M-LOK Handguard 0040017BLK","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe Bushmaster QRC Complete Upper is a ready-to-install AR-15 upper assembly chambered in 5.56x45mm NATO and compatible with .223 Remington. Built around a 16-inch 4150 CMV barrel with a salt bath nitride finish, this upper is designed for durability, corrosion resistance, and dependable performance. It features a carbine-length gas system, a 1:7 twist rate for stabilizing a broad range of bullet weights, and a 7075 forged A4 flat top upper receiver with a black hard coat anodized finish. The free-float style M-LOK handguard offers modern accessory mounting flexibility, while the included salt bath nitride bolt carrier group, MPI tested bolt, and A2 birdcage flash hider complete this practical, duty-ready package.\u003c\/p\u003e\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eComplete Bushmaster QRC upper assembly for AR-15 platforms chambered in 5.56x45mm NATO and .223 Remington.\u003c\/li\u003e\n\u003cli\u003e16-inch 4150 chrome moly vanadium barrel with salt bath nitride finish for long service life and corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e7075 forged A4 flat top upper receiver with black hard coat anodized finish for strength and optics-ready versatility.\u003c\/li\u003e\n\u003cli\u003eM-LOK handguard provides lightweight handling and flexible accessory attachment options.\u003c\/li\u003e\n\u003cli\u003eIncludes salt bath nitride bolt carrier group, MPI tested bolt, carbine-length gas system, and A2 birdcage flash hider.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Bushmaster\u003c\/li\u003e\n\u003cli\u003eModel: QRC\u003c\/li\u003e\n\u003cli\u003eSeries: Complete Upper\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: 0040017BLK\u003c\/li\u003e\n\u003cli\u003eUPC: 604206201324\u003c\/li\u003e\n\u003cli\u003eProduct Type: Complete Upper\u003c\/li\u003e\n\u003cli\u003eFirearm Fit: AR-15\u003c\/li\u003e\n\u003cli\u003eCaliber: .223 Remington \/ 5.56x45mm NATO\u003c\/li\u003e\n\u003cli\u003eBarrel Length: 16 in\u003c\/li\u003e\n\u003cli\u003eBarrel Material: 4150 CMV\u003c\/li\u003e\n\u003cli\u003eBarrel Finish: Salt Bath Nitride \/ Black Nitride\u003c\/li\u003e\n\u003cli\u003eTwist Rate: 1:7\u003c\/li\u003e\n\u003cli\u003eThread Pattern: 1\/2x28\u003c\/li\u003e\n\u003cli\u003eGas System: Carbine-Length\u003c\/li\u003e\n\u003cli\u003eUpper Receiver: 7075 Forged A4 Flat Top\u003c\/li\u003e\n\u003cli\u003eReceiver Material: Aluminum\u003c\/li\u003e\n\u003cli\u003eReceiver Finish: Black Hard Coat Anodized\u003c\/li\u003e\n\u003cli\u003eHandguard: M-LOK\u003c\/li\u003e\n\u003cli\u003eHandguard Finish: Black\u003c\/li\u003e\n\u003cli\u003eBolt Carrier Group: Salt Bath Nitride\u003c\/li\u003e\n\u003cli\u003eBolt: MPI Tested\u003c\/li\u003e\n\u003cli\u003eMuzzle Device: A2 Birdcage Flash Hider\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bushmaster","offers":[{"title":"Default Title","offer_id":44199319634042,"sku":"FLX-156637","price":572.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/bccc8f4cbb993110c7609cce79808300.png?v=1788273274","url":"https:\/\/tlooutdoors.com\/products\/bushmaster-qrc-complete-ar-15-upper-5-56-nato-16-in-black-nitride-m-lok-handguard-0040017blk","provider":"TLO Outdoors","version":"1.0","type":"link"}