Glock 30, a forgotten 45 ACP Glock . ⋆ LooseRounds.com

For some folks, just the right size in their hand.

The original link no longer works - here are some more:
Massad Ayoob: The new Glock 30S in .45ACP: 
    https://dailycaller.com/2013/06/21/massad-ayoob-the-new-glock-30s-in-45acp/
"Eleven .45 ACP rounds in a light, compact pistol with amazing accuracy? What’s not to like? For many, the only answer to that question was, “The slide’s too thick for the level of concealment we want.” For that, Glock had later introduced the slim 7-shot G36 in .45 ACP. Soon, creative Glock enthusiasts discovered they could get the 30 to work with that slim 36 slide on top. Some experimenters had malfunctions, others didn’t.
Glock was listening. When a special unit of the LAPD requested a thinner Glock .45 for their detectives, without losing capacity, Glock tweaked the recoil spring system and came up with a 36-size slide that seems to run just fine on the 30SF chassis. (SF stands for short frame—shorter front to back to better fit small hands.) The result is the new Glock 30S..."

Gun Review: GLOCK 30S:  https://www.thetruthaboutguns.com/gun-review-glock-30/
    https://www.19fortyfive.com/2021/01/glock-30-review-a-sub-compact-45-with-a-big-bite/

Glock 30 Gen 4 Reviews:  https://gunivore.com/pistol/glock-30-gen-4-review-2016/
    https://www.shootingandsafety.com/glock-30/
    https://onlinechp.com/the-glock-30-concealed-carry-handgun-review/

G30 Specs from Glock:  https://us.glock.com/en/pistols/g30-gen4
G30S Specs from Glock:  https://us.glock.com/en/pistols/g30s
G30SF Specs from Glock:  https://us.glock.com/en/pistols/g30-sf

Differences: 
    https://www.glockforum.net/threads/understanding-the-glock-30-g30s-g30sf-g30-gen-4.8156/
"Gen 3 Glock 30 - long frame, thick slide. - 26.28 oz
Gen 3 Glock 30SF - short frame for smaller hands, same thick slide. - 26.28 oz
Glock 30S - short frame, thin slide same as the 36. - 22.75 oz
Gen 4s - all short frames with adjustable straps to change grip length and other upgrades such as grip texture, extra mag, etc
Glock 36 - single stack 45 with slim grip and narrow slide but only holds 7 rounds vs 11 of the 30 models."