Bushmaster 0040017BLK QRC Complete Upper 5.56x45mm NATO 16\" CMV Nitride Barrel, Black, Flat Top Aluminum Rec, A2 Flash Hider, Carbine Length Gas, Fits AR-15
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Bushmaster
Overview
The Bushmaster 0040017BLK QRC Complete Upper is designed for builders looking for a ready-to-install upper receiver for their AR-15 platform. Featuring a 16-inch barrel chambered in 5.56 NATO, this upper utilizes a carbine-length gas system, ensuring reliable cycling and performance. The flat top receiver allows for easy mounting of optics and accessories, making it a versatile choice for various applications. This upper is commonly found in builds that prioritize a carbine gas system and 5.56 NATO caliber.
Specifications
Bushmaster 0040017BLK QRC Complete Upper 5.56x45mm NATO 16\" CMV Nitride Barrel, Black, Flat Top Aluminum Rec, A2 Flash Hider, Carbine Length Gas, Fits AR-15
Build history on GunPartPicker
Builders have been adding the Bushmaster 0040017BLK QRC Complete Upper 5.56x45mm NATO 16\" CMV Nitride Barrel, Black, Flat Top Aluminum Rec, A2 Flash Hider, Carbine Length Gas, Fits AR-15 to their builds on GunPartPicker since February 2026. All time, it ranks #465 of the 1,654 upper receivers builders have added.
It was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $519.76 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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