The Glock 18 (un-compensated), can be effectively utilized in it full-auto mode with surprisingly little training. Anyone already experienced with the Glock pistol really only needs a couple hours of quality professional instruction, and several days of the right kind of practice to MASTER it. That's right. With the proper instruction and practice, it can be MASTERED in several days--five days at the outside.
It is a myth that an automatic pistol cannot be adequately controlled. It cracks me up. Ask anyone who has a lot of experience with the Glock 18, and they will tell you that once you get the hang of it, it is no problem to control that gun. You can keep all of your rounds on a man-sized silhouette at 7 to 10 yards, no problem.
The fact is, a full auto 9mm Glock is no problem to handle if you have had the proper training. Now, do you want to use it for a headshot on a BG when they are holding the hostage in front of them? Of course not. However, in certain scenarios, it can be a very effective tool.