Rainier Arms Match 223 Wylde Barrel 18" SPR AR15 AR-15 5.56
Rainier Arms Match 223 Wylde Barrel 18' SPR AR15 AR-15 5.56

Rainier Arms Match 223 Wylde Barrel 18" SPR AR15 AR-15 5.56

Part Number:RAINIER-18
Your Price: $239.95
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Rainier Arms Match .223 Wylde Barrel 18 SPR AR15 AR-15 5.56

Many have asked us to build a barrel with the same workmanship as our UltraMatch™ barrels while keeping it more affordable. We are able to reach our goal by sourcing a very high end barrel blank at an affordable price. We start off using a high precision match blank in 1:8 twist, machine it to the highest quality and matched with our limited-life time warranty, you have a barrel that is the best value, hands down, in the industry. We are so confident in our Match™ 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.

We offer a 1:8 twist to accommodate to a wide range of bullet weights. Guaranteed to shoot sub-MOA with match grade ammo.


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


What is a Wylde chamber?

A Wylde chamber is a hybrid mix between .223 and 5.56. For those of you that do not know, the 5.56x45 NATO is NOT exactly the same as a .223 Rem. The 5.56 spec allows for slightly longer chambers for higher pressures. The .223 has a tighter chamber around the neck and is shorter which allows for a bit better accuracy. You can shoot .223 ammo in a 5.56 chamber, but it is DANGEROUS to shoot 5.56 (surplus for instance) ammo in a .223 SPECIFIC chamber. BE CAREFUL. What the Wylde chamber does is allow for 5.56 ammo with slightly tighter chamber for better accuracy. So you can shoot both 5.56 and 223 safely with better accuracy than a standard 5.56 barrel chamber. Now, I may have gotten a little bit of the chamber details a bit off, but one can search the internet and read about it in detail if you would like. It is sufficient to say that you can shoot .223 and 5.56 ammo out of the Wylde chamber without problem and it's more accurate than a NATO 5.56 chamber.

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