The LANTAC USA LLC Lamprey Flash Hider LAM-556FH-PBS is engineered for superior gas disruption and enhanced shooting performance, making it an essential upgrade for firearm enthusiasts.With a patented design that excels in reducing flash intensity and duration, this flash hider significantly improves signature reduction, giving you better control and stealth in your shooting sessions.Includes Timing Shim Set1/2X28 to Plan B ThreadLantac recommends the use of semi-permanent thread locker Rocksett, sold separately.Experience unmatched performance and precision with the LANTAC Lamprey Flash Hider.