I took my GT bull barrel out shooting, it shot great, but in the first few minutes, shooting standard Federal 9mm (nothing plus about it), it broke an extractor!
So, anyone here who shoots a collector grade, even only a box every few years; this broke a numbered part on my toggle, luckily it was not a collector piece.
https://youtu.be/Vx3r-09e_60
https://youtu.be/gfQpRdrtb3M