You can find the Rugged Suppressors R3 Flash Mitigation System 5.56 1/2x28 here Fast $9.95 shipping! Orders over $200 ship for free!

The Rugged Suppressors R3 Flash Hider features variable fluted prongs, which yield zero ring and world-class flash reduction in a light and compact size. The R3 uses Rugged's Dual Taper Locking System which is compatible with the Radiant762, Surge762, Razor762 and Micro30 suppressors.

Caliber: .223/5.56
Threads: 1/2x28