Rugged Suppressor FH001: At just 2.9oz and 1.9\" long, the Rugged R3 Flash Mitigation System is over 30% lighter and 26% shorter than competing 5.56 designs. The R3s patent pending design features world class flash reduction, zero ring and a smooth, snag-free, toothless Dual Taper Locking System. The R3 Flash Mitigation System is compatible with Rugged Supressors\' Radiant762, Surge 7.62, Razor 7.62, and Micro30.