This Bear Creek Arsenal barrel is a 4.5-inch .300 Blackout AR-15 barrel built in an HBAR heavy profile with a micro-length gas system and a 1:7 twist rate. Machined from 4150 chrome moly vanadium steel and finished in Parkerized black, it's threaded 5/8x24 at the muzzle and sized with a .750-inch gas journal diameter for standard AR-15 gas block fitment.
The barrel is machined from 4150 chrome moly vanadium steel in a heavy HBAR profile at 4.5 inches, chambered for .300 Blackout with a 1:7 twist rate suited to a wide range of bullet weights in this cartridge. It's finished in Parkerized black for wear and corrosion resistance, and it's set up for a micro-length gas system with a .750-inch gas journal diameter, along with 5/8x24 muzzle threads for standard AR-15 muzzle devices.
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Brand: Bear Creek Arsenal
Platform: AR-15
Caliber: .300 Blackout
Barrel Length: 4.5"
Barrel Profile: HBAR
Barrel Material: 4150 Chrome Moly Vanadium Steel
Finish: Parkerized
Twist Rate: 1:7
Gas System Length: Micro Length
Gas Journal Diameter: .750"
Muzzle Thread: 5/8x24
Color: Black
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