If the rate of fire of a semi-automatic AK or AR rifle is about 120 rounds a minute versus whatever a fully-automatic version is, what difference does it make? Of course, you could always get one of those little burst gadgets to save the effort it takes to pull the trigger each time.
Shoot low, sheriff. They're riding Shetlands!
Underneath the starry flag, civilize 'em with a Krag,
and return us to our own beloved homes!
Buy War Bonds.