There are some asking what is “bump firing” on an AR15. So here’s the quick and dirty sort of lengthy explanation on Wiki: Bump firing is the act of using the recoil of a semi-automatic firearm to fire shots in rapid succession, which simulates the feeling of a fully automatic firearm. This process involves bracing the rifle with the non-trigger hand, releasing the grip on the firing hand (leaving the trigger finger in its normal position in front of the trigger), pushing the rifle forward in order to apply pressure on the trigger from the finger, and keeping the trigger...