delete

[Heavy_Grinder]

delete

[ar15barrels]

what parts are unique to the G19.

Frame.
Magazine Body
Slide
Barrel

[Heavy_Grinder]

Frame.
Magazine Body
Slide
Barrel

Besides the obvious.

Let me rephrase as say, what internal frame parts are unique to the g19? I guess I’ll have to just start assembling with the g17 lower parts kit that I have on my polymer 80 compact. Whatever parts don’t fit then I’ll have my answer.

[G-forceJunkie]

Frame.
Magazine Body
Slide
Barrel

Close, the locking block is probably different as well, and recoil spring. Slide stop lever could be as well if its for an early 2 pin gun.

[nick]

You're not using the locking block, so all the lower parts are interchangeable.

[Junkie]

If they're all the same, then why are the LPKs sold separately for full size vs compact?

[ar15barrels]

If they're all the same, then why are the LPKs sold separately for full size vs compact?

They are not exactly the same, but they are interchangeable.

Fullsize guns have a smooth trigger while the midsize/compact guns have a grooved trigger face.
Note the comments at the bottom of the chart about interchangeability...

[Junkie]

That's good to know, I'm surprised that sellers don't mention that it'll work in any of them.

[sportfit]

...and slide lock spring.

[Woody13]

As sportfit said the slide locking spring. I change them out all the time and your good to go.

[Jaybird]

Slide lock spring would be the only non interchangeable part between the 2 as far as the LPK goes. Everything else is good to go. The full size frame has a much longer awkward looking spring. Always amazed at the simplicity of the Glock internals. Gaston is genius.

[Maht_g]

I assume this (interchangeability) would also hold true for g22/23? Bought a kit for a 23 but switching gears and going full-size. The same kit still work? Other than the slide lock spring?

[Jicko]

Mostly true.

Personally, I like the smooth trigger much more than then grooved trigger.