Always Armed OCT2 10.5" 5.56 Upper Receiver

Build a high-performance AR pistol or short-barreled rifle (SBR) with the Always Armed OCT2 10.5" 5.56 Upper Receiver. Engineered for compact handling, durability, and tactical adaptability, this complete upper receiver combines heavy-duty forged components with an aggressive 8-sided free-float handguard.

Forged in the USA from aerospace-grade 7075-T6 aluminum, the Mil-Spec upper receiver comes fully equipped with an ejection port dust cover and forward assist assembly. At its core is a 10.5-inch 4150 Chrome Moly Vanadium steel barrel chambered in 5.56 NATO. Treated with a wear-resistant black nitride finish, the barrel features a versatile 1:7 twist rate to accurately stabilize standard 55gr up to heavy 77gr match projectiles.

The carbine-length gas system paired with a .750 low-profile gas block ensures smooth, reliable cycling under rapid fire, while an A2 birdcage flash hider mitigates muzzle flash. Surrounding the barrel is the 10" OCT2 Series M-LOK free-float handguard, offering a top MIL-STD 1913 Picatinny rail and M-LOK attachment slots for lights, foregrips, and accessories. Finished in a classic Hardcoat Black Anodize, it provides maximum scratch and corrosion resistance.

Key Features & Specifications:

• Mil-Spec Forged Upper: Machined from 7075-T6 aluminum with dust cover and forward assist included.
• 10.5" Nitride Barrel: Premium 4150 CMV steel barrel treated with a durable, low-friction black nitride coating.
• Versatile 1:7 Twist: Optimized for high accuracy with standard to heavy 5.56 NATO / .223 Rem ammo.
• Reliable Gas System: Carbine-length gas system with a heavy-duty .750 low-profile gas block.
• OCT2 Series Handguard: 10" M-LOK free-float rail with continuous top Picatinny rail and ergonomic profile.
• Standard Muzzle Device: Fitted with a classic 1/2x28 A2 birdcage flash hider.
• Hardcoat Finish: Finished in sleek, durable Hardcoat Black Anodize.
• American Made: Manufactured 100% in the United States.