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Rainier Arms, LLC

Rainier Arms Rock Creek 300AAC Blackout Pistol Barrel

Limited Run of Rainier Arms barrels built on Rock Creek Blanks with 5R rifling! Still comes with our 100% money back guarantee within 90 days of purchase. If you aren't completely satisfied with the barrel for any reason, return it for a full refund, no questions asked. We offer a 1:8 twist to accommodate to a wide range of bullet weights.
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Availability: Out of stock





  • Stainless Steel Match Grade Blank
  • Twist: 1:8
  • Thread Pitch: 5/8X24
  • .750 Gas Block Seat
  • 300 AAC Blackout Chamber
  • Pistol length Gas System
  • M4 Feed Ramps
  • Proprietary Contour
  • Bead Blasted Finish


7.5" Weight: 1 lbs. 1.3oz

10.5" Weight: 1 lbs. 6 oz.

14.5 Weight: 1 lbs. 12.4oz

16"  Weight: 1 lbs. 15oz

Additional Info

Additional Info

Manufacturer Rainier Arms, LLC
Finish Stainless Steel
Caliber 300AAC
Configuration No
Option No
Gas Length Pistol
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No



Feel free to ask us any question regarding this product.

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