*NEW* Swiss Arms Programmable Mosfet Burst Unit V2 - Airsoft Burst Chip Swiss Arms Programmable Mosfet Burst Unit V2 Programmable 2-12 Shots and Burst Fire 8.4, 9.6 Nimh/Nicad, and 7.4, 11.1 lipo There are 4 types of MODES selection Choose the MODE depending on the voltage of your battery.