Black Collar Arms has announced the release of a limited edition 300 Blackout 1:5 twist AR-15 pattern barrel.

Black Collar Arms states “We’ve done a production run of Ultra Match Grade, 7-inch, 1:5 twist 5R rifled, 300 Blackout AR-15 barrels.

These are made from 416R stainless steel Criterion blanks and are beautifully salt bath nitrided a deep, jet black. 5/8×24 muzzle threads.”

KEY SPECIFICATIONS:

  • AR-15 fit
  • 300 AAC Blackout (300 BLK) chambering
  • 7-inch length
  • 1:5 twist 5R rifling
  • 5/8×24″ muzzle threads
  • 0.740″ shoulder
  • 0.750″ gas block journal diameter
  • 0.104″ gas port diameter
  • uses a pistol length gas tube
  • Dimpled for set screw opposite gas port
  • 416R stainless steel
  • Salt bath nitrided deep jet black
  • Made from ultra-match-grade Criterion blanks
  • Weight: 15.5 ounces

To learn more about Black Collar Arms. CLICK HERE

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