Criterion Barrels Stainless Steel Fluted Contour Barrel .223 Wylde (Options)


When the added velocity of a longer barrel needs to be preserved, but the desire for additional weight reduction remains, barrel fluting serves as an excellent solution to help shave away unwanted bulk. Criterion Fluted Contour AR-15 Barrels are designed to ensure maximum concentricity and consistent dimensions throughout the full length of the bore. Eight flutes are machined around the circumference of the barrel to the front and rear of the gas port. Each flute is polished to smooth jagged edges while retaining a sharp appearance.  Each 416R stainless steel barrel comes complete with an M4 barrel extension and a .223 Wylde chamber designed to accept both .223 Remington and 5.56 NATO cartridges. Chambers are finished, but barrels should be headspaced and installed by a qualified gunsmith.



  • 416R Stainless Steel
  • Hand Lapped
  • M4 Barrel Extension
  • .223 Wylde
  • 1-8 Right Hand Twist
  • .750 Gas Journal

* MSR Arms does it’s best to provide high-quality merchandise at great prices. As such, some of the products we offer cannot be discounted further than the listed price using a general discount code. Products such as the one you are viewing can only be discounted further with a product-specific discount code. Please contact us if you have any questions regarding this pricing policy. We are always happy to answer any questions. *


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