For sale:

GLOCK 20 (full size 10mm GLOCK), 2nd generation

has around 500 rounds through it. it is still like new.

comes with 5 15 round mags, uncle mike's kydex OWB holster, and original glock box.

price: $425 (plus shipping if applicable and you pay FFL transfer fee)

(note: i have experienced this gun locking back with rounds still in the magazine a few times. not often, but a couple of times. i haven't really tried to diagnose it, but my guess is replacing the slide stop lever would fix it. otherwise, though, the gun has been 100%.)