McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Pursue Your Passion
Rainier Arms, LLC

Rainier Arms UltraMatch .223 Wylde Mid Barrel - 18

Rainier Arms UltraMatch .223 Wylde Mid Barrel - 18
Sign up to get notified when this product is back in stock

Availability: Out of 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.


  • Stainless Steel Match Grade Shilen Blank
  • Length: 18" Midlength
  • Twist: 1:8
  • Thread Pitch: 1/2 X 28
  • .750 Gas Block Seat
  • .223 Wylde Chamber
  • Midlength Gas System
  • Ratchet Rifling
  • M4 Feed Ramps
  • WOA 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 RAB-U-223-M18-SS
Manufacturer Rainier Arms, LLC
Finish Stainless Steel
Barrel Length 18"
Caliber .223 Wylde
Configuration No
Option No
Gas Length Mid
Height No
Rail Length No
Mount No
Profile Medium Contour
Reticle No
Co Witness No
Size No


Customer Reviews (4)

Top Shelf barrel and worth the penniesReview by
Very impressed with this barrel. 3 shots on top of each other at 100 yards using my own 77gr hand loads. (Posted on 6/11/2016)
Use a different barrelReview by
I had RA do a custom $2,000+ build for this barrel with the goal of competing in PRS matches with it under 600yards. I've tested it with match 77gr ammo from hornady, IMI, federal, norma and barnes. It is consistently a 1.5 moa shooting barrel of 5 shots from supported prone. I had a top ranked PRS pro shoot it to see if it was just me and he only got .75moa group out of it. I can fairly easily do .5moa out of a different shilen barrel i have for 6.5 creedmoor AR. Really disappointed with this. (Posted on 5/27/2016)
Very Impressed!Review by
I bought this barrel for my last AR build. At 100 yds I shot multiple .5 MOA or better groups using Sierra 69 gr MK bullets. At 500 I was able to hit the 3" steel with every trigger break. I was very impressed with both the quality and the price. (Posted on 5/27/2015)
greatest ar barrelReview by
I have been shooting this barrel for about 2 years now. Sub inch groups at 200 yards all day long with 69 bthp sierra. I have taken it out to 500 yards with ease on a 12x24 steel plate. i have over 3000 rounds so fare with no decrease in accuracy and most of those have been at local carbine (idpa style) matches. Still my go to for small bore accuracy. (Posted on 11/15/2014)

Write Your Own Review

Only registered users can write reviews. Please, log in or register

You may also be interested in the following product(s)

Contact Us