This silencer is a special “Cayce” design and utilizes special internal methods and measurements in order to provide a top .45 ACP silenced performance, as well as easy maintenance.
Caliber: .45 ACP (This can also be used on 9mm, 10mm, 40 cal firearms with different pistons)
Suppression Sound Level: -35 to -40 dB (depending on type of firearm it is used on, weather & if shot wet)
Material: Aircraft Quality 7075-T6 Aluminum / Stainless steel piston
See more at: http://www.shadowopsweaponry.com/products/.