The Sith Upper Build Kit from Davidson Defense is a .300 Blackout AR-15 upper assembly built around a 10.5-inch H-Bar barrel with a pistol-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 10.5 inches in .300 Blackout with a 1-in-8 twist rate, H-Bar profile, and 4150 Chrome Moly Vanadium construction with a phosphate finish. The pistol-length gas system pairs with a .750 O.D. gas block. The Panhead billet upper receiver features a .458 ejection port door and is 6061-T6 aluminum with an anodized finish. Thread pitch is 5-in-8x24, and the kit includes a muzzle-mounted fake can.
The freefloat Keymod handguard is aluminum with a black finish. The freefloat profile provides a clean forend with Keymod interface for accessory placement along the rail.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.
Barrel Name: AR-15 10.5" .300 Blackout, Pistol Gas, HBAR, 1:8T Parkerized Barrel
Barrel Length: 10.5 inches
Caliber: .300 Blackout
Barrel Gas System Length: Pistol
Barrel Profile: HBAR (Heavy Barrel)
Barrel Twist Rate: 1:8
Gas Block Size: 0.750 inches
Barrel Finish: Phosphate
Barrel Material: 4150 CrMoV
Barrel Thread Pitch: 5/8x24
Muzzle Device: Muzzle Mounted Fake Can
Muzzle Device Details: Cosmetic only, provides no sound suppression
Muzzle Thread Pitch: 5/8x24 TPI
Handguard Material: Aluminum
Handguard Style: Keymod
Handguard Color: Black
Upper Receiver Name: Panhead Billet Upper Receiver (NOFA) .458 Ejection Port Door
Upper Receiver Material: 6061-T6
Upper Receiver Finish: Anodized
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