I shot a GSSF match last week, which entailed shooting my G17 in two divisions. I took it apart to clean it today and this part fell on the floor.
Upon further inspection it was one of these broken off parts in the receiver.
What is that called, the locking block? Locking lug? Is it a user-replaceable part? I think I've had it out before with one or two pins. I would like the opportunity to fuck things up myself instead of paying UPS Next Day Air shipping to Glock.
This is a 2001 GSSF Tenth Anniverary model 17, and it happens to be about 17 years old. It has had almost all 147s, some plated, some jacketed, mostly with Solo 1000, recently with N320.