These are cheaper and easier.... all my MR and AR's have them.
https://datummachine.com/product/forced-reset-cassette-original-style-fire-control-pins-spring-pins/
I don't know who had those or bought them, but mine as much nicer and more elaborate. My Colt guy says that they're probably worth 80% of what I paid for the pistol.
It doesn't matter, as it's a memory piece.
A little diving, and came up with this....
https://www.theoutdoorstrader.com/threads/item-gone-fs-1911-grips-john-adams-master-engraver-hand-engraved-pewter-grips.3789247/
Just got this from a deceased friend's brother. My Colt expert friend, will be cleaning and tuning. The ammo in the ejected mag, was from 1980.
I have a pistol from from many of my deceased friends.....