The Volley Upper Build Kit from Davidson Defense is a 7.62x39 AR-15 upper assembly built around a 16-inch H-Bar barrel with a carbine-length gas system. The kit includes the upper receiver, barrel, and handguard. The bolt carrier group and charging handle are not included.
The barrel runs 16 inches in 7.62x39 with a 1-in-10 twist rate, H-Bar profile, and 4150 Chrome Moly Vanadium construction with a phosphate finish. A carbine-length gas system pairs with a .750 O.D. micro low-profile gas block positioned beneath the handguard. The upper receiver is 7075-T6 aluminum with an anodized finish. Thread pitch is 5-in-8x24, and the kit includes a GI Birdcage flash hider sized for the .308 bore diameter at that thread pitch.
The 15-inch freefloat M-Lok handguard is aluminum construction with M-Lok interface for accessory placement along the rail. At 15 inches, the handguard length exceeds the 16-inch barrel, so the barrel does not protrude past the handguard, with the muzzle device providing clearance forward of the handguard end. The .750 O.D. micro low-profile gas block sits beneath the handguard, keeping the exterior profile clean along the forend.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.
Caliber: 7.62x39mm
Barrel: AR-15 16" H-Bar 7.62x39 Enhanced Phosphate Finish Barrel
Barrel Length: 16 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: Phosphate
Barrel Twist Rate: 1:10
Barrel Profile: H-Bar
Barrel Thread Pitch: 5/8x24
Barrel Gas System Length: Carbine
Gas Block: Micro Low-Profile Gas Block
Gas Block Size: 0.750 inches
Handguard Material: Aluminum
Handguard Length: 15 inches
Handguard Style: M-Lok
Upper Receiver: AR-15 Upper Receiver
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Muzzle Device: AR-15/AR-10 .308 GI Birdcage Flash Hider
Muzzle Thread Pitch: 5/8x24
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