I see over at Tam's place that NYPD is buing some Glock magazines. Some yada-yada about blocking the magazine to 15 rounds. Tam was asking if they were making a long-slide 19, by marrying a 17 slide to a 19 frame, but that ain't so. Evidently what NYPD is doing is to have Glock make a batch of G17 mags blocked to hold 15 rounds.
Which makes absolutely no sense, unless it has something to do with state law.
If Gaston made a factory model and dubbed them the Glock 19L, he'd sell a metric butt-ton of them. Better that he'd make a run of G17 frames with G19 slides and call it the Glock 17 Commander. You'd still have 17 rounds of shooty goodness, but the shorter slide would make the pistol easier to conceal.