The new extended slide release and thumb safety for the 1911 lanquished untouched in my range bag for a whole week. One evening this week, I sat down to do a quick installation.

Now, I already expected that the quick fit I was doing would only verify that I needed to *actually* fit these parts and in that, I was not disappointed. 🙂

So far as I can tell, the slide release will only need some relief on the top of the left grip panel, which is fairly typical. I may even have some old grips somewhere that have already been cut away, though my cutting away skills have developed significantly since those old grips were done. I probably wont just hog it away with a bench grinder this time.

The thumb safety will require a little more work. It looks like the spring plunger engagement will need a tiny bit of filing. It looks like it will be a sharp snap and may benefit from a very small amount of rounding off. I don’t want it too easy to move, just not too hard.

The lug on the safety is, as typical, oversized. It will require substantial fitting work. At first blush, it will probably only need relief on the back of the lug to clear the opening in the frame. Usually, the rest of the lug is very close to the proper shape and position, but until it’s in there and everything else is out of the way, ya just can’t tell.

The fit between the sear and the lug on the safety when engaged must be zero. The sear must not move at all with the safety engaged, especially if hammer and sear work has been done to lighten trigger pull.