Based on a conversation about using a 4516 slide on a 457 frame, it will probably fit, but the 457 slide is a bit longer so it will probably overhang the rear of the 4506 frame. "Probably" is the operative word as there may also be differences in the slide rails.
You might be better off if you can find a used 4516 slide.
Not a definitive answer, I know, but it's the best I can do.
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Can open, worms everywhere.
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