Built for shooters who demand serious accuracy and downrange performance, this 6.5 Grendel II 18" Fluted Upper delivers exceptional stability, energy retention, and repeatable precision. The 416R stainless heavy fluted barrel adds rigidity while helping manage weight and heat—making it ideal for sustained, accurate fire.
A 1:8 twist rate stabilizes a wide range of Grendel loads, while the CMMG adjustable mid-length gas system ensures smooth recoil and reliable cycling across different ammunition types. Paired with a 15" M-LOK free-float handguard and Patriot Arms tactical muzzle brake, this upper is built to stay flat, shoot consistent, and perform under pressure.
Performance Highlights:
6.5 Grendel II Chambering – long-range capability & hard-hitting performance
18" 416R Stainless Fluted Heavy Barrel – rigidity, cooling & accuracy
1:8 Twist Rate – optimized for modern Grendel projectiles
CMMG Adjustable Mid-Length Gas System – smoother recoil & tunable cycling
Mil-Spec Upper Receiver – proven durability & reliability
15" M-LOK Handguard – free-float stability & modular setup
Patriot Arms Tactical Muzzle Brake – reduced recoil, faster follow-ups
Blackout Feed Ramps – reliable feeding under all conditions
Why This Upper Delivers:
Match-grade accuracy with heavy fluted barrel stability
Smooth, controllable recoil for better shot placement
Excellent long-range performance and consistency
Built for hunting, precision shooting, and field reliability
