Yeah i have no idea like i said i just found it with no other parts. I just dont understand why anyone would go through all the trouble of making such a nice reproduction with the sling mount and everything and why it was in canada in some old box when you really dont see thompson machne guns in canada. Maybe it came off some nice replica or something but why was it not with the rest of the gun then because a thompson sub machine gun is nothing without its foregrip lol But I have no idea but it sure fits my hand good i wish i had the gun to go with it. Im still not 100% convinced its not from ww2.