The Geissele Automatics Geissele CHF Chrome Lined 300BLK 8" barrel is a compact, purpose-built AR-15 barrel designed to maximize the performance of the 300 Blackout cartridge. Cold hammer forged from chrome moly vanadium steel and finished with a durable manganese phosphate coating, it features a chrome-lined bore and chamber for long service life and consistent accuracy. The Geissele taper profile, custom pistol-length gas system, and included gas block and gas tube create a balanced, reliable setup for short-barreled builds.

This 8-inch barrel is ideal for building a maneuverable AR-15 pistol or NFA-regulated short-barreled rifle, especially when paired with a suppressor. The 1:7 twist rate stabilizes a wide range of bullet weights, from light supersonic loads to heavy subsonic rounds, making it well suited for range use, training, and hunting where compact size and dependable performance matter. Geissele’s reputation for precision machining and rigorous HPT/MPI inspection is reflected in this barrel, offering shooters a refined, high-quality component for their next build.

Key Features:

• Manufacturer: Geissele
• Model: CHF Chrome Lined 300BLK 8"
• Caliber: 300 Blackout (300 BLK)
• Barrel Length: 8"
• Barrel Type: Cold Hammer Forged
• Gas System Length: Pistol
• Gas Block Journal: 0.750"
• Twist Rate: 1:7
• Muzzle Thread Pattern: 5/8x24
• Finish: Manganese Phosphate With Chrome-Lined Bore And Chamber
• Accessories: Includes Gas Tube And Gas Block