Originally Posted by Wolf13
would increasing fps increace accuracy and range? cuz i could always go with a bigger spring, and I only want to fix this cuz in scenerio games im getting out ranged buy CA p90s, M4's and even an Echo 1 AK-47
To an extent. Generally, 360-380 FPS (on .20's) is the "sweet spot", then putting in a good hop-up rubber, shooting .25s or .28s, and a tightbore will increase accuracy.
A higher FPS on light rounds (like .20s) will be counter-productive. Since you have an M16 length barrel, I'd recommend changing to .25's if you haven't yet and put in a good hop-up rubber, and adjust the hop-up properly.
What make is your gun?