Gemtech

GSL Technology of Jackson, Michigan designed and manufactured Gemtech Suppressors from 1994 to 2016.

In 2011, Gemtech developed their own line of subsonic .22 Long Rifle ammunition optimized for use with sound suppressors.

Kel Whelan, working with Brett Olin of CCI Ammunition came up with a round utilizing a unique 42 grain bullet and travelling at 1050 feet per second.

[28] Two years later, the company began producing .300 Blackout ammunition in both supersonic and subsonic loads.

[29] Gemtech was instrumental in forming the American Suppressor Association (ASA), a nonprofit trade association "to further the pursuit of education, public relations, legislation, hunting applications and military applications for the silencer industry".

A Gemtech Outback suppressor mounted on a Walther P22 .
GemTech, Subsonic .22LR ammunition.