What about changing the trigger return spring only. I would like to make my pull heavier and order a 6.5lb TRS from Earl and Carl Walther Repairs. Would this render my pistol unsafe? What are your thoughts?Whoever is reading this thread, please understand that when you change one internal part on this pistol, it is no longer a PPQ. All of the testing that was done, by Walther, to ensure reliability, durability, and (most importantly) safety, no longer mean anything at all in regards to YOUR pistol.
Canik just recently issued a recall on their TP9 pistols, where the fix is simply changing springs. The Canik pistols are pretty much clones of the P99 and PPQ pistols internally. Look at the pictures of the internals of the frame and slide on this link, and tell me if they look familiar. Simply changing springs can make this pistol safe, or unsafe. I see no reason to believe that this would not also be true of the Walther.
Not only is there a known recall on a pistol that directly copied the internals of these Walther pistols, with the fix being a change in spring rates, but there is also the fact that it was found that an impact on the back of the slide can result in the striker being released:
Now I ask this, who here has tested the pistol's ability to remain inherently drop safe with these aftermarket springs? How do you know that a simple drop will not discharge a round? Even Sig, a well known manufacturer, managed to screw this up with the P320. Do you really believe a "backyard gunsmith" is going to test this at all, much less to the same standards as firearm manufacturers? You guys are playing with fire.
If people can suggest performing actions that anyone who puts 2 plus 2 together can see would be dangerous, then I most certainly can suggest this:
DO NOT ALTER OR REPLACE THE FIRING PIN BLOCK SPRING!!!
If you do, YOU are responsible for the results. If the pistol discharges from being dropped, or from YOU falling with the pistol on your waist, it is YOUR fault. YOU chose to replace that spring when it was shown to you that it could very realistically be very dangerous to do so. YOU are responsible for any harm or death that may come to whoever is within range of your pistol. YOU are responsible for any damage to property that is within range of your pistol. YOU are responsible for any charges filed against you...
...and all for what? You guys are consciously and directly, negatively effecting the inherent safety of your pistols, trying to get an only slightly better trigger out of the polymer striker fired pistol that is known to have the best trigger available on polymer striker fired pistols. I'm really at a loss trying to figure out what you guys are trying to get out of these pistols. Even if you could provide times on a timer and targets that showed improvement, which I doubt, it still wouldn't even remotely be worth the risk.