The KGM Technologies M2-ESS (Enhanced Suppressor System) is the solution for suppressing the sound"" flash"" and ground signature of the M2 family of weapon systems. The M2-ESS is an integrally suppressed system paired with KGM's proprietary Nitride/ELCOF low friction surface conversions. The M2-ESS both optimizes and modernizes the M2HB machine gun. The M2-ESS is permanently attached to an Ohio Ordnance Works"" Inc. barrel"" making installation as easy as a barrel swap. This suppressor can be run with your M2-SLR or M2HB.