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Hardened Arms 8.5" 300 Blackout Barrel
Your Price $107.99

Hardened Arm's LLC AR15 300 Blackout Barrels are profiled and chambered to our exacting specs right here in our machine shop in the USA. Each barrel is made from steel produced in the US. American made, button rifled barrels, stress relieved and air gauged for superb accuracy and completed with a Melonited finish for excellent durability. We use only 4150 Chrome-Moly-Vanadium, referred to in the firearm world as "machine gun steel" its quality is above industry standard, bringing you an AR15 barrel that will outlast and out-shoot most other manufacturers' products.

  • Chamber: 300 AAC
  • Profile: HBAR
  • Fluted: No
  • Barrel Length: 8.5"
  • Stress Relieved barrel
  • Air gauged
  • Gas System: Pistol-Length
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: Melonite/QPQ
  • Process: Button Rifled
  • Barrel Lining: Melonite
  • Barrel Extension: M4
  • Assembly: Stripped
  • Weight: 1lb 13.6oz

Originally designed in a longer configuration, the .300BLK 8.25 inch barrel length has become popular in pistol length and SBR builds due to its extreme concealability and its compact size. Being able to come around corners quickly in an urban environment without a long barrel lead is perfect for the operator or home defense. Our barrels are made in the USA from solid bar stock, head spaced and are ready to assemble. Gas port tuned for reliability with your AR15 300 Blackout rifle or pistol using either supersonic or subsonic .300 Blackout ammo.
515 Tucker Ave Friday Harbor, WA 98250 |
Phone: 425-530-0837