silverback tac 41 advanced hop up kitHere we have an advanced hop up kit for the TAC 41, perfect for those who want to fine tune their hop up adjustment even further. It has an amplitude of 500 m with 50 increments of 10 m (while the original wheel has increments of 15 m). When used with the low nub, you can adjust the pressure on your rubber from 0 to 500 m, and with the high nub, you can adjust the pressure from 250 to 750 m. The laser marking on the wheel helps return to the exact