LOL....did you lay your GCNM slide next to a Std GVT Slide? If you look inside forward of the locking lug....NOTE: you wont see milling marks here......on a std GVT the metal on the inside forward of the last locking (fwd not rear) groove will be the same "Thickness" all the way to the muzzle....you GC should be "Thinner" ie: lightened going forward on the inside of the slide.......
James:
From the forward locking groove, the thickness of the steel is uniform all the way to the muzzle.
I'll try taking a photo when I get back from Texas this weekend, but I'm not sure my little P&S is up to it.
- Tom
