The Criterion Barrels AR-15 6.5 Grendel Hybrid Barrel delivers precision and reliability in an 18-inch, stainless steel profile with a 1-8 twist and mid-length gas system, designed for steady match-grade performance and dependable field results. Engineered for AR-15 compatibility, this 18" hybrid contour combines stiffness and weight balance to optimize velocity retention and reduced muzzle flip, making it an ideal choice for long-range shooting, hunting, and target practice with the versatile 6.5 Grendel cartridge. The stainless steel construction provides excellent corrosion resistance and consistent accuracy across temperature swings, while the 5/8-24 muzzle threads accommodate a wide range of compensators, brakes, and suppressor-ready configurations per your setup. With a robust mid-length gas system, youll experience smoother cycling and improved reliability under rapid-fire scenarios, translating to tighter groups and repeatable performance on the bench or in the field. This AR-15 barrel from Criterion Barrels emphasizes build quality and consistency, ensuring your rifle achieves optimal ballistic efficiency, rugged durability, and a clean, precise launch for 6.5 Grendel loads.