QUOTE (Allizard @ Apr 11 2007, 01:43 PM)
That doesn't make a lot of sense to me.
Hammer spring have nothing to do with the slide in the first place... all it does is hitting the valve harder and allow a bit more gas release into the chamber. thus increase FPS and a stronger blow back action. totally opposit from what you describe. And only an enchanced recoil spring will make the slide stiffer.
When the slide cycles back, it catches the hammer and rotates it back so that it catches on the sear. A stronger hammer spring will increase the force required to drive it back, causing the backward motion of the slide to be stiffer. Since the stiffer spring will increase blowback force it will cancel out any extra resistance in the slide's motion. Therefore, you would only notice the difference when manually working the slide.
I'd like to point out that the sears seem to be the weakest point in the KWA / KSC glocks. I've had two KWA G19's. The first had its sear fail after about 6,000 rounds, while the second failed after about 10,000. The biggest strain on the sear is the metal on metal friction of the sear "breaking" from the hammer, so a stronger hammer spring will very likely reduce the life of the sear. As you've already taken the mechanism apart to upgrade the spring, a sear replacement is likely within your ability. The most dificult part is actually finding a retailer that will sell you one. You might want to buy a couple while you're at it. If you look at the sear you'll see how poor of a design it really is.