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Discussion Starter · #1 ·
I just picked up a usp 45 dated "KF". It looks like it has had about 3000 rounds through it; I cleaned it up and it looks real nice though. I was wondering how old this one is? (serial # is 25-016***.)

I can tell there are some differences on the frame from an "AH" dated one, and the slide has some differences too.

One more question, would my "AH" dated elite frame be kosher on this old "KH" usp slide? The fit seems to be pretty nice, my old usp now has a match trigger with the elite frame. Any feedback would be nice, thanks.
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