Manufactured to the highest quality standards and featuring a patented design, the LANTAC Lamprey Plan B Flash Hider offers improved signature reduction over competitors products. Its unique 'toothed'four tine design disrupts gas more efficiently and reduces flash intensity and duration. Shooters can now enjoy advanced weapon control with the ability to mount the Plan-B HUB.Lamprey Flash Hyders are precision manufactured on Swiss lathes and machined from AISI4140 steel that is then hardened to 55Rc (Rockwell C approx) and QPQ (Quench Polish Quench) Nitrided to AMS2753D standards for extreme use enhanced corrosion resistance and improved lifespan. FeaturesThread: 1/2-28 to Plan-BSerial Numbered for Quality ControlComes with appropriate timing shim set