I have the opportunity to buy a Colt Series 80 Government model that the seller has installed an after market stainless amby safety. I don't like them and want to return to a factory original blued safety. Am I going to have any issues going from the abmy to single original style?

99% chance it will drop right in with no problem unless the original smith was a dunderhead, always a possibility....
Regards, Joe

JD is most likely correct, you might have to have a little fitting done, but it is no big deal.

But I do have a question, what is it about the Ambi safety that you do not like???

I have them fitted to a couple of my 1911's that I might have had to use left handed, and I have never had any problems with them in any way.

I have used these particular 1911's for over 30 years...

Now, I work on a helluva lot of 1911 pistols from all manufacturers, and I have yet to have a safety "drop in". I'm not saying it can't happen; I'm just saying it never happened to me. My advice is to take it to a gunsmith.

450 #2,
Thanks for the response. Just too traditional I guess. I like simplicity. The first 1911 hit my hip in 1968 and then carried on the job for 22 years. Still carry them.

Probably your best bet would be to find a smith who works on 1911s a lot. He'd probably be willing to trade you an original for your ambi, one that he had swapped out of another Colt, and make sure that everything worked right. Back when I did this sort of work, I had lots of originals in my parts box and would have been very happy to make such a swap.

Most Colt parts will drop in with little or no problem but not the aftermarket parts. The ambi installation would have required cutting something to fit it properly, and if the smith cut the safety (as he should have) instead of the hammer then an original Colt safety may very well drop in and work fine. If he cut the hammer then all bets are off.

Either way, the suggestion to use a pro smith is a good one.
Regards, Joe

go to a smith. I REPEAT, go to a smith. Drop in close is not the same as truly fit. That simple procedure gone wrong wont be pleasant the first time it fails when you swipe the safety off.

Toomanytools does more than his share of 1911, probably more than a lot of 1911 specialists........