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Rainier Arms, LLC

Rainier Arms Select 300AAC Blackout Barrel - 14.5

Rainier Arms Select 300AAC Blackout Barrel - 14.5 Finish: Black Matt Stainless

Availability: In stock

Regular Price: $274.95

Special Price $233.00

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There are a number of advantages to polygonal rifled barrels; such as less bullet deformation, resulting in reduced drag as well as prolonged barrel life, not to mention ease of cleaning. These barrels were made to our exact specifications & drawings and made of 416R Stainless steel. We control the manufacturing process to provide the most accurate barrel in its price range. We are so confident in our Select grade barrels that we will offer a 100% money back guarantee within 90 days of purchase, no questions asked. If you aren't completely satisfied with the barrel for any reason, return it for a full refund. Guaranteed to shoot sub-MOA at 100 yards with match ammo. You deserve this confidence inspiring barrel for your next custom build.


    • 416 R ordnance grade stainless steel produced in Germany by the same mill as H&K
    • F bar rated = meaning it is acceptable for use by all Nato country’s
    • Extensions made from 4140 AE = meaning aircraft grade steel
    • Manufacturing proprietary processes creates a stress free product that has a hardened surface on the bore. To improve the wear and longevity
    • M4 feed ramps on extensions to current production standards to ensure conformance between manufactures


      • Barrel Length: 14.5"
      • Gas Block Seat: .750
      • Rifling: Polygonal 5R
      • Weight: 29 oz
      • Stainless Steel: 416R
      • Feed Ramps: M4
      • Gas System: Carbine
      • Chamber: 300 AAC Blackout
      • Finish: Black Nitride or Matte Stainless
      • Twist: 1X8.5
      • Testing: MPI tested
      • Made in the USA!

Additional Info

Additional Info

SKU RA:552:
Manufacturer Rainier Arms, LLC
Finish No
Barrel Length 14.5"
Caliber 300AAC
Configuration No
Option No
Gas Length Carbine
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.