Rugged Suppressor R3 Flash Mitigation Black with M15x1 Threads & 2.13" OAL for 7.62mm Radiant762, Surge762, Razor762 & Micro30 Suppressors Rugged Suppressors 7.62 SCAR17 R3 Flash Mitigation System features variable fluted prongs, which yield zero ring and world-class flash reduction. This is a SCAR17 specific flash hider that shoulders on the muzzle instead of the barrel shoulder. The R3 Flash Mitigation System utilizes a snag-free, toothless Dual Taper Locking System making it compatible with the Radiant762, Surge 7.62, Razor 7.62 and Micro30.