At one time, I had a 10" .45acp barrel for a 12 gauge. It was a cool toy and shot okay but using it was a bit awkward as you had to use a rod to knock the empties out of it.
It had an o-ring or two as I recall to hold it in place and it fit pretty well. It had a notch so the extractor wouldn't eject it.
It had an o-ring or two as I recall to hold it in place and it fit pretty well. It had a notch so the extractor wouldn't eject it.


















































