FYI, the frame, slide and internals are all different between the Glock 17 and 18... I have handled and shot one too . To the untrained eye they may look similar, but to Glocks defense (and us Glock owners) the gun does not physically share a single major component between the models. On the left rear of the slide there is selector switch which actives the full auto sear, these are not components found on any Semi-auto Glock manufactured. It's not like a AR15 where you can literally drop in a full auto sear box into the lower receiver in about 10sec and it functions like an M4/M16 without any other mods.Yup here it is..... house bill 4296.
“(D) A semiautomatic pistol that has the capacity to accept a detachable magazine and any 1 of the following:
“(i) A threaded barrel.
“(ii) A second pistol grip.
“(iii) A barrel shroud.
“(iv) The capacity to accept a detachable magazine at some location outside of the pistol grip.
“(v) A semiautomatic version of an automatic firearm.
“(E) A semiautomatic pistol with a fixed magazine that has the capacity to accept more than 10 rounds.
Glock 18 is an full auto and the glock 17 & 19 are version of that pistol...So your G19 and G17 could easily be illegal.
So its never enough, it never going to be one single type of gun.