Geissele Automatics 8″ 300BLK Hammer-Forged Barrel – Phased Array Gas Block & Tube
A new addition to the Geissele line-up of barrels, the HBAR provides a much heavier profile, ideal for sustained volumes of fire.
Precision machined and cold hammer forged utilizing the highest quality materials in Geissele’s state of the art facility to ensure the highest quality and consistency of each barrel.
Our barrels are High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI). The accuracy and reliability of Geissele CHF barrels makes them an ideal choice for a hard use duty weapon, precision tuned competition gun, and everything in between.
Specifications
- Length: 8″
- Contour: Geissele Taper Profile
- Gas System Length: Custom Pistol Length
- Gas Block Journal Diameter: 0.750″
- Gas Port: Geissele Phased Array
- Thread Pitch: 5/8×24
- Chamber: 300 Blackout
- Twist: 1:7 Twist
- Rifling: Cold-Hammer Forged
- Material: Chrome Moly Vanadium Steel
- Finish: Chrome-lined, Phosphate
- Weight: 0.95 Pounds
Note: All NFA rules apply



Emmanuel G. (verified owner) –
Starting my 300 Blk out build and I couldn’t believe how hard it was to find a geissele barrel in stock . Not only that at a killer deal especially with their leo/mil discount . That aside shipped hella fast and had some pretty dope surprises.
Shopping from the sweatshop from now on RTD FTW
Steven G. (verified owner) –
Awesome barrel! Not just that but these guys shipped the barrel extremely fast! And also included a hilarious gift that made my day. Definitely buying from them again! Thanks!