I have
razz Under 6 inches, a scope anymore than 2x is for people with weak eyes who refuse to wear glasses IMHO. Now if they want to lug an 8 to 12 inch barreled steel monster around and pretend they can fire pseudo-primitive carbines one handed with the help of a log then whatever.
I'll put it plainly here; UNDER 152 mm barrel With a scope means your a blind ******** stop putting scopes on Short barreled SMGs... ********.
[that goes for you too
H&K, stop pussifying the Special forces]
Learn to use your iron sights or invest in a proper non magnified red dot sight. You aint squeezing any more range out becuase you can click that ******** up higher in elevation, your round will not deliver the energy you want beyond 50 meters, accept it, choose the right weapon for the ranges your engaging at.
Sorry, got off track there.