Ifishsum
Member
I'm having to replace the firing pin stop on this Colt GI 1911A1 and have some questions for you 1911 experts - I ordered an STI series 70 stop and I'm in the process of fitting it to the slide. The replacement part is quite a bit thicker than the original piece. I'll be able to fit it into the slide as the steps on the edges are about the same, but it does not appear that rear of the firing pin will protrude far enough out the back to be struck by the hammer hard to fire. The original piece appears to have been filed or otherwise thinned to some degree. My main question is - do I have to also reduce the thickness of the new part as part of the fitting process, or is this an indication that my firing pin is out of spec? And if I do have to make the stop thinner, what is the preferred method?
Pictures of the FP stop and the firing pin, the original is on the left and the new STI stop is on the right:
Pictures of the FP stop and the firing pin, the original is on the left and the new STI stop is on the right: