Guys, i've taken matters into my own hands and i'm scavenging parts from my MP5(such as the bucking) to fix my SCAR but i hit a road block. See, the original problem i had with my SCAR was that the hop-up nub wasn't extending down far enough, so i tried disengaging the hop-up gears to push the thing down all the way but all the way is too short. We determined that the spring inside the hop-up is keeping it too high but from the looks of it even removing that wouldn't do much. I'm really not sure what to do. Any ideas that DOESN'T require me to buy anything?