A culmination of over two decades of center fire pistol suppressors. The new GEMTECH GM-9 is a culmination of over two decades of center fire pistol suppressors. Many of you are familiar with both our Tundra and Multimount suppressor, the GM-9 takes the best of both of them and puts it into one great package. The tube diameter is the standard 1.25" and it accepts all Multimount adapters. This suppressor is rated for sub sonic 300 Blackout as well as full auto 9mm. GEMTECH offers a variety of mounts to adapt this suppressor to carbines, sub guns, and pistols. It can be used with lesser calibers also. To top all of this off it is completely user serviceable. The tube separates from the G-Core and can be easily cleaned to prolong the life of the suppressor. We are very pleased with this suppressor design and hope you and your customers are too.