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if i get an mp5 and i go to kokohead to shoot it which side of the range do i shoot it at the pistol side or the rifle side?  it shoots a 9mm pistol round and is called a Machine Pistol does that mean i shoot it on the pistol side?  or do i have to shoot it on the rifle side because its a bigger than just a handgun?  what about rifles that are legally pistols like the mini ar15's are those okay to shoot on the pistol side?  sorry if this is a stupid question. 

No such thing as a stupid question, unless I am the one who asks them. heehee 
 
I have seen people use those .22lr mp5 clones on the rifle side.  I think, If im not mistaken, a regular mp5 is not legal here(in Hawaii), as well as AR-15 pistols.  The barrels are too short and they would be considered an 'Assalt Pistol'.

Is that a gun in your crotch or are you just happy to see me.