HK3P or WE G17.
I have put easily 15k rounds through my WE G17, maybe more, and the only thing to break was the outer barrel after about 12k.
Only thing done to mine is a PDI tight bore barrel and PDI W-Hold hop rubber; shoots out to 100 feet, and under the right conditions beyond, with accuracy. Five mags, countless fills and empties. Zero leaks.
Guardians of Asgaard
"The judge meeting is arranged for terrorist." - G&P Laser Product
Primary - Z-Custom VFC ZTW
LifeLine - TM Glock G18C