KAK Industry 300 BLK Pistol Barrel Gov. Profile Melonite - 8.5"

Manufactured by KAK Industries


In Stock

"We ship fast!" Order by 4PM CST M-F or 11AM CST Saturday and your order ships same day. FFL items may take longer to process.


In Stock


Note:This barrel is under 16" and is subject to NFA rules and regulations as well as local laws. Must be attached to a pistol lower receiver or a registered short barrel rifle lower with a tax stamp.

The Value Line of AR-15 barrels from KAK Industry allows you to build an affordable and reliable pistol or rifle. This barrel is chambered in .300 Blackout and is only 8.5” long making it a great option for an AR pistol build or registered SBR. It is machined from 4150 Chrome Moly Vanadium steel which is one of the best steels for barrels because of its machinability and inherent strength. Additionally, it is finished with Melonite which is applied differently than Nitride, but produces much of the same characteristics, like high wear and corrosion resistance. This .300 BLK barrel features a pistol length gas system and 1:8 twist rate for optimal cycling and stabilization of the heavier .30 caliber bullets. The .750” gas block journal is the most common allowing you to pick your favorite adjustable gas block. Threaded 5/8x24 for .30 caliber muzzle devices and suppressors, so you can build the ultimate .300 Blackout AR pistol.

  • Chambered in .300 Blackout
  • Government profile and Melonite finish
  • 8.5” with pistol length gas system
  • .750” gas block journal
  • Non-dimpled
  • Threaded 5/8x24
  • M4 barrel extension

With a reputation for precision manufacturing, KAK Industry offers quality, American made components at affordable prices. They began as a single shop and grew to a huge manufacturing facility in California where they now produce more than 1.75 million firearms components a year. They have since expanded to even more locations, including testing facilities, so they can ensure that every one of their products meet the demands of shooters, hunters, and businesses everywhere.


Barrel CoatingSalt Bath Nitride
Barrel ContourGovernment
Barrel Length8.5
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandKAK Industry
Caliber Gauge300 BLK
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthPistol
Thread Pattern5/8 X 24
Twist Rate1:8
Weight1.2 lbs

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

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