in simple technical terms,
a machine gun fires multiple rounds with the single manipulation of the trigger.
a bump stock does not change the way a semi automatic fires. pull the trigger/fire one round. reset the trigger and fire again and reset, and so on.
with a bump stock the rifle still requires a press of the trigger for each shot. the bump stock uses recoil to allow the action to move rearward so as to effect trigger reset and then the forward momentum of the rifle within the housing of the bump stock makes the finger contact the trigger again firing the rifle again.

Last edited by Brian; 03/26/19 02:26 PM.
Brian
LTC, USA Ret.
NRA Patron Member
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