The ION has a simple trigger system compared to other guns, just the grub screw and the magent screw. As above, when you turn the screw the trigger will move closer to the microswitch. If you have the stock trigger, this is pretty much all you can do. After market triggers such as the VP scythe trigger have a 2 magent system and have roller bearings. The trigger is also lightweight. If you want a lighter pull, a lighter microswitch is available, but you will have to solder that on yourself, or buy an after market board with a lighter switch such as a tadao. The final thing i would say, if you buy an after market trigger, and i left this till last for a reason, is the microswitch activation screw. Be very careful when adjusting this as if you make it too long it can damage the switch. Making that longer will activate your trigger sooner.