Rugged Suppressor R3 Flash Hider Black M18X1 The R3 Flash Hider 7.62 features Variable Fluted prongs, Which Yield Zero Ring And World-Class Flash Reduction In a Light And Compact Size. The R3 Flash Mitigation System Utilizes Rugged Suppressors' 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: M18X1 Finish: Black