The Beretta 92FSA fullm auto has a fold under fore grip on it, but it has a longer barrel with a flash suppressor so I guess it's a little safer to deploy that. The Glock 17 full auto conversion I saw had a round aluminum Knurled handle that screwed into the left side of the frame (reinforced on the inside with a steel plate) kind of like what you would see on a die grinder or buffer, and it had a diamature and length of a suppressor so when firing, you could have one hand on the grip and the other on the side. Looked a lot safer than the foregrip. Still wish I bought that when I had the chance!!That sucks! why would you use fore grip on a glock in the first place?
But wait, most range employees know everything about guns of everykind....just ask them and they will tell you. LOLI hear ya...if ranges required IQ testing before renting some of these weapons, some of those folks wouldn't be shooting...But then again, if some of those range employees were required to perform the same test, some of the ranges would be unmanned...