Take your long-range performance up a notch with this 6mm ARC 18" Upper featuring a Ballistic Advantage SPR fluted barrel. Designed for maximum accuracy, higher velocity, and reduced weight, this setup delivers flat trajectories and consistent hits where it counts.
The 18" 416R stainless steel fluted barrel provides added rigidity while cutting weight, and the 1:7 twist stabilizes today’s high-BC projectiles with ease. A rifle-length adjustable gas system ensures smooth recoil and reliable cycling, while the 15" M-LOK free-float handguard gives you a solid, modular platform for any setup.
Finished with an MBP muzzle brake and nitride BCG compatibility, this upper is built to shoot flat, stay controlled, and perform under pressure.
Performance Highlights:
6mm ARC Chambering – flat shooting, long-range capability
18" 416R Stainless SPR Fluted Barrel – increased velocity + reduced weight
1:7 Twist Rate – optimized for modern high-BC bullets
Adjustable Rifle-Length Gas System – smoother recoil & tunable performance
15" M-LOK Handguard – free-float accuracy & modularity
MBP Muzzle Brake – reduced recoil, faster follow-ups
15-Round Magazine Included
Why This Upper Stands Out:
Enhanced long-range accuracy and consistency
Lightweight fluted barrel design
Smooth recoil impulse for better shot control
Built for precision shooters and real-world performance
Ideal For:
Long-range AR builds
DMR / SPR-style setups
Predator & varmint hunting
Precision range shooting
