I think it's actually a French MAS-36 with a grenade launcher attachment of some description, I think the French used to use a 44mm grenade but later switched to the standard NATO 22mm version. I would have to do some digging but looking at the action I'd definitely say it's not a Yugo rifle but a French one, leave it with me.
Ok I think what you had was a MAS-36/51 equipped with a muzzle attachment to fire 22mm rifle grenades.
Last edited by Snagman; 01-11-2014 at 04:46. Reason: Figured it out
I argee. It's a MAS 36 with a spigot launcher. I used to have them come through the shop i worked at with every batch of MAS rifles that came in.~Muir