I would put it on the garage shelf where I store so many of my wonderful, unusual collectibles.
I have shot thousands of the "regular" GI 38s.
Don't actually recall ever seeing any of these.
I'd put the PGUs in the "No Shootum" category. You just do not see them today. I don't think I mentioned earlier that I was present at the destruction of a full case of those back in the early 1990s at Dyess AFB. Too bad I was unable to steal any of them.