Finally after a month of waiting this gorgeous thing showed up... Northeast Sten MkV GBB.
Absolutely beautiful replica, and packs a serious kick.
Breaks down almost exactly like the real steel, and operates very similarly. The bolt will even fly out the back if you leave the stock off and fire it, so don't do that.
I also recorded a little bit of slow motion-footage to show off the action...
I will say one thing though, my second mag seal has already gone, but such are the perils of limited run GBB replicas... EDIT: I've since fixed this issue, the inner gas chamber just needed reseating.