fire control unit programerbar burstImproves the moose gun's reaction time. Avoid problems with contacts melting, charring on contact surfaces, increasing resistance, slow response, etc. Burst setup: Set your selector to "Full Auto" mode and hold the trigger down until you hear 3 beeps. Then quickly pull the trigger the number of times you want a burst to be. Then hold the trigger down until it confirms with a long beep. You can set the burst between 2 and 12 shots. Or if you choose