The r3l is a longer version of the r3 flash mitigation system featuring variable fluted prongs which yield zero ring and world-class flash reduction.Rugged suppressors' r3l utilizes a snag-free toothless dual taper locking system making it compatible with the radiant762 surge 7.62 razor 7.62 and micro30.Finish: BlackModel: R3LThread Pattern: 5/8"-24 tpi