Earlier RIAs and Armscorp had problems with grips and grip screws.
Charles Daly (Another from the PI) would not accept a Colt slide release.
The differences are small, but increase the work needed.
Get a copy of Kuhnhausen's books, grab your micrometer, and measure.
This is based on my experience, not conjecture.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
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