The Xeno(TM) GOV Flash Hiders feature a sleek, minimalist design that provides superior flash reduction. Compatible with both Xeno(TM) GOV and legacy Xeno(TM) adapters. It's large taper and thread-behind-taper design ensure precise alignment, easy removal, and secure lock-up, even during intense firing conditions. The Xeno(TM) GOV is the ideal choice when alignment, repeatability, compactness and effective flash reduction are critical. The difference between the standard Xeno(TM)muzzle devices and our GOV series is simply the material; The GOV series muzzle devices feature a nitride-coated 17-4 stainless steel instead of the standard nitrided 4140, providing exceptional resistance to corrosion and erosion.