SA 1911A1 Ambi-Safety replacement

[Vinagre]

Good afternoon,

I am thinking about removing and replacing the ambi-safety on my Springfield Armory 1911A1 (PX9151L) with a left sided thumb safety (to accomodate a Laser Grip). Is this a dificult process? A single sided thumb safety is fairly inexpensive and I would be able to retain the original parts for re-installation if need be later on. Any advice, guidance, steps, lessons learned, etc... that anyone may have to offer would be most appreciated. Thanks in advance....

 

[Lycanthrope]

It's not difficult if you understand how the thumb safety blocks the sear.

The thumb safety will come a bit oversized in that area and if you try to install it in it's "safe" position with the grip safety off you can see where the sear will block it from entering the frame. CAREFULLY file that portion away until it BARELY clears the sear. This should take you some time.

The, smooth out the rough edges on the thumb safety where it rides against the frame as some can gall.