Glad to hear your Glocks do so well, esp. if your life depends on their reliability.
A Glock is a trooper, it will last forever and keep going, even when filthy.
You can't say that about a Beretta or Sig really, they require much more work.
I can't comment on Berettas from direct experience. However, I shoot the Sig P-220 in 45ACP and can tell you they keep on running reliably even when very dirty and with many rounds through them.
The only part replaced after roughly 10,000 rounds was the recoil spring and that was just a precaution. The P-220 can be flushed out with a water hose and go right back to work. In addition these guns ran flawlessly right out of the box.
A Glock is a trooper, it will last forever and keep going, even when filthy.
You can't say that about a Beretta or Sig really, they require much more work.
My error.