Are Glock 19 and 17 slides the same? This is essentially a comparison between Glock 17 and 19 slides, but we'll focus solely on slide distinctions here.
No, the Glock 19 slide differs from the Glock 17 slide in terms of barrel locking lug specifications, length, and compatibility.
Moreover, a GEN 3 Glock 19 slide won't fit on a GEN 4 Glock 19 frame or GEN 5 frame.
If you're thinking about swapping an aftermarket optic-ready Glock 19 slide onto a Glock 17 to save money, you might need to buy a dedicated optic-ready slide instead.
Glock 17 VS Glock 19 Slide Overall Length: 7.95" VS 7.28"
Glock 19 uses a different length recoil spring than the Glock 17
Aren't Glock 19 frame the same as Glock 17 frame, but slightly shorter?
Glock 19 slides and Glock 17 slides share similar overall designs, but the Glock 19's barrel locking lugs have different specifications compared to the Glock 17.
The same applies to Glock 23 and Glock 22.
When comparing the Glock 19 to the Glock 17, if you prefer the full-size frame of the Glock 17 but desire the barrel length of the Glock 19, the Glock 19X is the solution.
At the time of writing this content, the popular Glock 19X Gen 5 availability is very limited. Please check PSA's website to see if they have one in stock.
If not, please check out ZEV OZ9 or Shadow System MR920.