From the Gemtech Website. I do like their stuff!
THE GEMTECH STORY
GEMTECH—The Professional’s Choice For Decades. Gemini Technologies, known as Gemtech, began as a super group of already leading suppressor designers with roots in the suppressor business going back to 1976. With decades of experience, innovation, quality, honest business ethics and a customer first attitude, Gemtech has grown to the world’s leading suppressor company.
INNOVATION—Innovation since 1976, Gemtech is the leader in cutting-edge innovation and visionary designs for decades.
QUALITY—Decades of quality. Gemtech is an International Organization for Standardization (ISO) 9001:2008 certified company and maintains effective rigorous quality assurance systems and processes.
AROUND THE WORLD—Gemtech’s world-class suppressors are in use with all branches of the US Military. Gemtech suppressors are also in use by many Special Operations Forces, military and police of friendly foreign countries around the world.