Rugged Suppressors R3 Flash Mitigation System Flash Hider 7.62x39mm M18x1 Black. 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 our snag-free toothless Dual Taper Locking System making it compatible with all of our rifle and multi-caliber suppressors. This muzzle device is long enough to permanently attach to 14.5" barrels bringing them to 16" Specifications for Rugged Suppressors R3 Flash Mitigation System Flash Hider: Manufacturer: Rugged Suppressors Color: Black Caliber: 7.62x39mm Length: 2.125 in Weight: 2.5 oz Condition: New Features of Rugged Suppressors R3 Flash Mitigation System Flash Hider: Snag free Package Contents: Rugged Suppressors R3 Flash Mitigation System Flash Hider