This DPMS complete AR-15 upper is chambered in 300 AAC Blackout and built around a 10.5" 4150V chrome moly vanadium steel barrel with a 1:8" twist. The barrel is nitride treated for added corrosion resistance, and the M4 feedramps are cut into the barrel extension. A pistol-length gas system with a low-profile gas block keeps the gas setup compact on the short barrel, and an A2 flash hider finishes the muzzle. The upper arrives as a complete assembly, so you only need a lower to finish your build.

The forged 7075-T6 A3 upper is made to mil-spec and hard coat anodized black for a durable finish. The 9" Panther quad-rail handguard carries proprietary markings and gives you rail space for mounting optics, lights or grips. It comes with a forward assist, a dust cover, a charging handle and a bolt carrier group with a mil-spec Carpenter 158 bolt and a full-auto profile carrier. Each upper is assembled and test-fired by DPMS.

• Brand: DPMS
• Model: DP51655155775
• Caliber: 300 AAC Blackout
• Barrel Length: 10.5" 4150V chrome moly vanadium steel, 1:8" twist, nitride treated
• Handguard: 9" Panther quad-rail
• Gas System: Pistol-length
• Included: Bolt carrier group and charging handle
• Finish: Hardcoat anodized black receiver