Upvote:0
You should consider Kubinka tank museum:
It's well outside Moscow and I'm not sure they'll let you fire an AKM, but there should be an awful lot of military vehicles and stuff like that.
Upvote:1
Also, Taganka bunker:
http://bunker42.com/eng/opisanie-ekskursiy.php?ELEMENT_ID=414
It's a real declassified cold-war bunker in central Moscow, with guided tours and rent options for events. I've been there and it's pretty atmospheric.