Rugged Suppressor R3 Flash Hider Black 5/8"-24 tpi 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. Model: R3 Thread Pattern: 5/8"-24 tpi Finish: Black