This is my TSD SD97. It was bought with "pre-upgrades" already installed. The first two things modified was hop up unit and 6.01 barrel. Other than that it shoot great. 550 with .20 right out of the box. But I wanted a pop to the outside. So I cut the outer barrel off 6 inches, JB Weld the suppressor adaptor on it. Without losing any inner barrel length, this is what I have.

More will be coming.
Any feedback is wanted. Good, bad, but not stupid.