g mac

Thanks for the replys

Hello, I'm thinking of building an open gun using my current STI 2011 gun, which is currently a .40 cal. I already have a 9mm slide fitted to this 2011 frame. Is is hard to fit a new .38 super barrel? I'm thinking of the STI trubor with the built-in compensator. What is short-chambered mean? Is it hard to ream the barrel? I have moderate gunsmithing skills. Thanks in advance!