I am not an expert, but photos I have found on the internet make them seem plausible.
Found this a WWII photo archive site
At Omaha Beach - that is not me.
Destroyed Sherman WWII. And I found many more.
The MTH tanks muzzles are plastic so a guy could simply cut them off to the desired length with a Dremel. Also the machine gun needs to be removed as they would not have shipped them that way.
Joe