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Rainier Arms, LLC

Rainier Arms UltraMatch .308 Carbine Barrel - 12.5

Rainier Arms UltraMatch .308 Carbine Barrel - 12.5

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Rainier Arms UltraMatch .308 Carbine Armalite Barrel - 12.5 1

Availability: In stock

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We wanted to build an .308 barrel using the finest blank and mass produce them to bring them to market at the most competitive prices. Our UltraMatch™ barrels start out as Shilen blanks and contoured to our specifications. We wanted the best balance between accuracy while keeping the weight down as much as possible. The Rainier Match Chamber is a modified .308 WIN-7.62 NATO chamber to produce ultimate reliability and accuracy shooting both the 7.62 NATO & .308 WIN rounds.


  • Stainless Steel Match Grade Shilen Blank
  • Length: 12.5"
  • Twist: 1:10
  • Gas Block Seat: .750 Diameter
  • Thread Pitch: 5/8X24
  • Weight: 1 lbs 15.9 oz
  • .308 Rainier Match Chamber
  • Carbine Gas System
  • 6 Groove
  • M4 Feed Ramps
  • Proprietary Contour
  • Bead Blasted Finish


Barrel Care

For your convenience we have published barrel care recommendations for this product. The instructions are in Adobe Acrobat's Portable Document Format (PDF). You will need Adobe Acrobat Reader version 5.0 or higher to view and print the instructions.

If you do not have Adobe's Acrobat Reader, you can download a free copy at

Additional Info

Additional Info

SKU RAB-U-308-C12.5
Manufacturer Rainier Arms, LLC
Finish Stainless Steel
Barrel Length 12.5"
Caliber .308 Match
Option No
Gas Length Carbine
Height No
Rail Length No
Mount No
Profile Medium Contour
Reticle No
Co Witness No
Size No


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