[ILLusion]

The stronger the recoil spring, the faster it will return the slide to battery, but it will also consume more gas.

Ultimately, it makes the recoil much more crisp, and if you want your gun to feel more real, go for the heaviest springs you can find (and that your propellant can handle.)


Stronger hammer springs are for making your gas output more consistent. The more powerful your propellant is, the stronger the hammer spring you'll require to crack the valve open. High pressured propellants can be strong enough may cause your valve to not release any gas when struck by a stock recoil spring. Even propane/green gas on a warm summer day can cause this. But again, the stronger the spring, the more gas is consumed during the blowback process. I wouldn't go more than 150% for a hammer spring if you're using propane.

There shouldn't be any issues with swapping the springs on an otherwise stock gun.