Gemtech is one of the most experienced and trusted names in sound suppressors for military, law enforcement, and civillian sport shooters. Our staff has been building suppressors since 1976. Gemtech products are OSHA safe hearing protection for all those exposed to gunfire noise, from .22lr to 50BMG, from pistols, to submachineguns, to rifles. Flash and visual signature are all but eliminated as well. Gemtech Suppressors: Proven performance from Alaska to Afghanistan.