Audio problem: Right after Bert kills the second graboid he gets on the radio and says "we killed that mother-humper". Val replies "...be advised there are two more mother-humpers". However Val's lips don't seem to be saying "humper". This occurs even in unedited versions of the film. (01:01:40)
Tremors (1990)
Ending / spoiler
Directed by: Ron Underwood
Starring: Kevin Bacon, Fred Ward, Michael Gross, Finn Carter
More mistakes in Tremors
Earl Bassett: What kind of fuse is that?
Burt Gummer: Cannon fuse.
Earl Bassett: What the hell you use it for?
Burt Gummer: My cannon.
More trivia for Tremors
Question: Wouldn't Burt and his wife get in trouble for having all the weapons in their house? Even in later movies, there is no sign they got in trouble and Burt continued to have all these big weapons on hand.
Answer: In some parts of the US, especially in far-out desert towns, home arsenals like this are the norm. There is really no limit on how many firearms or ammo American's can own. Machine guns are illegal, but can be permitted. If you have any semi-auto firearm, it's not hard to convert to a machine gun. Albeit, the firearm will fail apart fairly quickly from the abuse.
Chosen answer: No, there's nothing illegal about any of the weapons they owned. Some of them may have required a Class 3 firearms license, but even this is not difficult (just expensive) for a law-abiding citizen to obtain.
Grumpy Scot