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Rainier Arms, LLC

Rainier Arms UltraMatch .223 Wylde Barrel - 18 SPR

Rainier Arms UltraMatch .223 Wylde Barrel - 18 SPR

Availability: In stock




We wanted to build an AR15 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. It also features Shilen's Ratchet Rifling which allows for flatter trajectories and easier cleaning. We are so confident in our UltraMatch barrels that we will offer a 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. Features:

  • Stainless Steel Match Grade Shilen Blank
  • Length: 18" SPR
  • Twist: 1:8
  • Thread Pitch: 1/2 X 28
  • .750 Gas Block Seat
  • .223 Wylde Chamber
  • Rifle Gas System
  • Ratchet Rifling
  • M4 Feed Ramps
  • SPR Contour
  • Bead Blasted Finish
  • Weight: 2 lbs 9 oz

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 RA:205
Manufacturer Rainier Arms, LLC
Finish Stainless Steel
Barrel Length 18"
Caliber .223 Wylde
Configuration No
Option No
Gas Length AR15 Rifle
Height No
Rail Length No
Mount No
Profile SPR
Reticle No
Co Witness No
Size No


Customer Reviews (5)

Best barrel ever!!Review by J
This absolutely the best barrel I have ever used. First time I shot it I was able to produce half-MOA groups at 100 yards with 55grain wolf gold ammo. I didn't even thing that was possible. Needless to say, I love everything about this barrel, and will be purchasing from rainier arms for any future builds. (Posted on 1/10/2016)
Out standing Review by JJLee
This barrel is one of my favorite part of my build. Excellent quality and super accurate. (Posted on 9/29/2015)
Unmatched Customer Service!Review by Corey
This review is of the customer service I experienced with this barrel. I had fit issues with my barrel and comp and during installation both were damaged. I contacted Rainer and they said to ship both of them back. Now I didn't purchase the comp through Rainer but they were willing to check it out to see what they could do. They not only replaced the barrel, but cleaned up the the threads on the comp and fit checked them before shipping everything back. All it cost me was the return shipping and time. This makes the second ultramatch barrel I have and I could not be more satisfied with their performance! Quality service and quality barrel! (Posted on 8/31/2015)
BUY ONE Review by William
After barrel break in process, first 5 shot group @ 100 yards did .440"... (Posted on 5/9/2015)
Great BarrelReview by John
I'm not usually one to post a review, but I feel inclined to after the results I've experienced. I've had experience with different barrels from different manufacturers and can say this one out performs them all. Even high end off the shelf ARs and bolt actions. I regularly experience half inch groups at 100 yards with factory ammo. Match grade hand loads were even better. Even cheap FMJ's are MOA or better. Save a couple bucks and buy this instead of a Noveske. I did and have no regrets. Now on to the .308 version. (Posted on 2/10/2015)

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