The Three Hundo 16-inch AR-15 .300 BLK Rifle Complete Upper Build from Davidson Defense is built on the AR-15 platform and chambered in .300 Blackout. The 16-inch barrel is forged from 4150 Chrome Moly Vanadium with a phosphate finish, featuring an HBAR profile and a 1:8 twist rate. The barrel's 5/8x24 thread pitch accommodates various muzzle devices, including the included GI Birdcage Flash Hider. This upper includes a 15-inch free float quad rail handguard made from aircraft-grade aluminum. The upper receiver, constructed from 7075-T6 aluminum, is anodized. The gas system is set to pistol length, with a 0.75 gas block. It features a standard AR-15/M4 charging handle and a bolt carrier made from 8620 alloy steel, finished in nitride for corrosion resistance.
Platform: AR-15
Caliber: .300 Blackout
Barrel Length: 16 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: Phosphate
Barrel Profile: HBAR
Barrel Twist Rate: 1:8T
Barrel Thread Pitch: 5/8x24
Gas System Length: Pistol
Gas Block Size: 0.75
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Handguard Length: 15 inches
Handguard Material: Aircraft-Grade Aluminum
Handguard Color: Black
Handguard Style: Free Float Quad Rail
Muzzle Thread Pitch: 1/2x28
Muzzle Device: GI Birdcage Flash Hider
Charging Handle: AR-15/M4, Mil-Spec
Bolt Carrier Material: 8620 Alloy Steel
Bolt Carrier Finish: Nitride
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