Criterion Barrels AR-15 18in Fluted Rifle Length Stainless 5.56 NATO 1-8

The Criterion Barrels AR-15 Barrel, 18 inches, Fluted, Rifle-Length, Stainless Steel delivers precision performance for AR-15 enthusiasts seeking a high-quality, dependable component. Crafted by Criterion Barrels, this 18" barrel is finished in stainless steel and features a fluted profile to reduce weight while enhancing rigidity and heat dissipation during extended shooting sessions. The rifle-length gas system paired with a 1-8 twist ensures excellent stabilization for a wide range of 5.56x45mm NATO ammunition, while the 1/2-28 muzzle threads provide compatibility with a broad lineup of suppressors and muzzle devices. Designed for AR-15 platform builds, this barrel emphasizes durability and consistent accuracy, making it ideal for target practice, varmint hunting, or duty-ready rifles. Its stainless steel construction and precise machining support steady shot placement and repeatable groups, helping hunters and sport shooters maximize performance from a reliable, long-range capable barrel. With its clean finish and thoughtful geometry, this Criterion Barrels component integrates seamlessly into AR-15 builds aiming for enhanced velocity, reduced heat buildup, and dependable operation across demanding shooting applications.