Spring, Cylinders, Piston Heads. making it a tighter seal will increase your distance...
Set up various targets and then just use a measuring tape to see how far you are shooting..
Move your hop up forward to adjust the straightness of your shots..
Simple Simon yo!!
"I love Multicam, that's my Airsoft uniform"
BA Level 3 Certified
Last edited by BobbyDangerous; August 10th, 2010 at 07:12..