I've got an Airsoft UHC USP that has been "deactivated" in that it doesn't fire BBs anymore, but the slide will cycle (not lock back though) and the safety flips on and off. I also have a silencer for it that doesn't screw on but the barrel is longer than the slide and you can fit it on there. I got the USP and a Glock 17 which included the silencer, and I have both as non-functioning props. I fiddle around with the Glock all the time.
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