G GDI-3D New member Joined Jan 3, 2026 Posts 1 Jan 3, 2026 #1 Been working on a project to make the USC more interesting... https://www.reddit.com/r/supersafety/comments/1q37l5u/ump45_frt_mag_dump Let me know what you think!
Been working on a project to make the USC more interesting... https://www.reddit.com/r/supersafety/comments/1q37l5u/ump45_frt_mag_dump Let me know what you think!
AGG Staff member Joined Nov 11, 2020 Posts 7,304 Location Alabama Jan 4, 2026 #3 Welcome to the site. Excellent work. Tony
ENDER Staff member Joined Nov 4, 2020 Posts 1,723 Location Michigan Jan 4, 2026 #4 @GDI-3D Welcome! Another example of American know-how and ingenuity. I don't want to presume, so I'll ask. This should work with a 9mm UMP conversion - right?
@GDI-3D Welcome! Another example of American know-how and ingenuity. I don't want to presume, so I'll ask. This should work with a 9mm UMP conversion - right?
Guyanaman1963 Well-known member Joined Nov 19, 2020 Posts 2,631 Location Clermont, Florida Jan 4, 2026 #5 Welcome to the site! More info would be greatly appreciated. M.
