[Electric_Fishy]

I was wondering if you stretch a spring too far or use one thats too stiff will it hurt the gun?

[two_four_878]

If a spring is too stiff, stuff won't move. If it is too light it will move one way then won't go back. So yeah, it can.

[goten43]

if a spring in a spyder is TOO stiff, there may not be enough pressure to push the hammer back against the spring

[phil-chill]

if you use an extremely stiff spring your marker might not even recock. If you're talking about a blowback. It might wear out the valve. if your talking about a closed bolt then i can't help you