Modify Spring
Model: MB SP140 Manufactured by: Madbull Airsoft
This upgrade will give u a more reliable spring with better consitancy over the crono, and also upgrades your fps. m100=310-340 fps m110=330-380 fps m120=380-405 fps m130=405-420 fps m140=420-450 fps m150=450-500 fps
Model: MB SP140 Manufactured by: Madbull Airsoft
This upgrade will give u a more reliable spring with better consitancy over the crono, and also upgrades your fps. m100=310-340 fps m110=330-380 fps m120=380-405 fps m130=405-420 fps m140=420-450 fps m150=450-500 fps
