I hate to say it but your money would be better served on ammo or a AA Glock kit.
The best Glock mod is learning how to shoot
And I have been.
With the amount of money I've spend on ammo going through this G17 in the past six months I could have bought a very nice AR15, nice tactical shotgun and a nice 1911; all for the same price.
I could be that dude with all the nice toys everybody talks about yet I decided to forgo that as I am of the mindset that it's better to have a #### gun and shoot it like a pro then five awesome guns and barely able to hit a decent group.
As for what Onagoth said. I'm sure that 9/10 times those mods are fine. If I was building a race gun I definitively would look into all of that. This is my "go to piece" however.
You could take a Glock pistol and fire 100, 000 rounds through it without any major failures. It's a more then working almost perfect design.
What gives aftermarket a bad taste to me is every time I read something on Glocktalk. You got this forum where people experiment with all sorts of things and almost every time there is an issue it's because somebody injected something that the gun/design didn't originally have.
If I came off like an arse about it, my bad. I'm just hypothesizing here, about the removal of the firing pin safety and how it effects the trigger. A broken titanium plunger, weak spring that will cause it to get stuck are all things that can lead to failure but can improve the trigger. With the plunger out all together, you get the best of both worlds.
I will give it a try the next range session, then I'll give that 25 cent trigger job a try too and re-install the plunger.