The Matell version was the best Christmas present I got in 1956.Burned through a roll of caps in about 5 seconds.
Nowadays, they would have a SWAT team closing in on you.
Back then, you would use your toy grease gun to mow down a whole row of your friends, who would try to fall on the ground in the most realistic fashion possible!
How times have changed.
My buddy told me when he came home after being discharged from the Navy (he and I had joined up together) he had a practice bomb and a .22 rifle in his luggage!!!!!!