My suggestion - if possible - Sell it and buy new..
I have a model GI .45ACP that I want to upgrade. Does anyone know how much it would cost to have it worked up to a loaded model and what the process would be?? At the least I want it to MIL Spec standards.
The only practical difference between the GI and the MilSpec is the sights, I think. You can have sights better than the MilSpec added to your GI for probably $100 with labor.
All the GI needs to work as a perfectly good defense gun are (with all credit to the late Col. Cooper) sights you can see, a trigger you can use, and a dehorning job.
Yep!! Good fixed sights and clean up the trigger ( at or a little over 4 lbs ) and knock off sharp edges . If a lefty add a ambi safety other wise leave that alone. No other changes needed.