Ben Stoeger goes, "Who is Mark Mark?"
I prefer not to buy any new/used guns without having to dry fire while watching the front sight (You know, if front sight jerks/moves, accuracy will be less thing
).
But used Glocks, especially LE trade-ins are one exception I will make as Tennifer hardening process of barrel/slide makes them very durable with no negligible wear of rifling (Remember? My G17 with 120,000 rounds shot through for USPSA still had pristine rifling and maintained accuracy?).
Even a well used Glocks with some replacement springs and new recoil spring assembly will essentially make it like new. And well used Glocks will likely have well broken-in trigger surfaces for smoother striker release/less or no movement of front sight/muzzle.
And with Glock 22 or 23, you are not just getting one gun but 3+:
- 40S&W with factory barrel
- 9mm/.357 Sig with conversion barrels
- 22LR with AA slide kit