GOG Paintball Blackheart Board for G1 Fire Rate (Adjustable), Trigger Debounce (Adjustable), Kick-In Rate for Advanced Modes, (Adjustable),Sustain Rate for Advanced Modes (Adjustable), Shots Fired to Enter Advanced Mode (Adjustable) First Shot Drop Software (Adjustable), PSP Legal Mode (Adjustable), NXL Legal Mode (Adjustable) Millennium Legal Mode (Adjustable), Three Shot Burst, Low Battery Indicator, More User-Friendly Software, Speaker for Easier Adjustments and On/Off Activation Non-Battery Draining Design, Nickel Plated Solenoid Components Higher Max Rate of Fire Software (20 shots/sec)