De-act 1921 in the UK, never a hope of that I'm afraid, and if one had turned up from somewhere, it certainly wouldn't have been a reasonable price...
As already mentioned, new regs means certainly not 'simply modified'....heavily butchered is more accurate.
Given we aren't even allowed to have any centre-fire full-bore semi-auto rifles, let alone semi-auto versions of smgs's, I have no doubt in saying every one of us here would exchange a de-act paperweight for a firing copy in semi-auto![]()