they are a lot of fun to shoot, sorry Ironkoji about this.
You ever fire one? even though it is 9mm, no matter what the barrel length is, or even if you fire the integral silenced version, after a 2 to 3 round burst, up and to the left.... You pretty much are wasting ammo going full auto and not bursting it.... VERY accurate firearm! In fact all normal HK factory sights on their rifles and smgs are great!
Yes, I have shoot a full auto HK MP5. I had no problem with a full 30 round burst into a target at 30 yards and kept all 30 rounds in a group 1 1/2 inch group. Fun shooting steel plates with them to.