Glock 45 slides — OEM and MOS optics-ready options for Glock’s Crossover pistol. The G45 combines the compact G19-length slide with the full-size G17 grip frame — delivering quick handling with full-size capacity and control. It’s one of Glock’s most popular duty and defensive platforms. Whether you’re replacing a worn slide, upgrading to a red dot, or building a custom Crossover pistol, you’ll find the right slide here.

Our inventory covers the Glock 45 OEM slide in standard iron-sights configuration and the Glock 45 MOS slide with a factory optics cut for red dot mounting. Both are built on Gen 5 architecture with the Marksman Barrel, nDLC finish, front serrations, and ambidextrous slide stop.

The G45 is part of the Crossover family. It uses the same compact G19-length slide as the G19X — the only difference between the two is the finish (G45 is black, 19X is Coyote Tan) and the magazine well design. The G45 slide will also fit a Glock 19X frame and vice versa.

Every slide in this category is fit-tested before shipping and backed by our fitment warranty. Whether you need a stripped slide shell for a custom build or a complete assembly that’s ready to install and shoot, we’ve got you covered.

Not sure if the Glock 45 slide fits your frame? The G45 uses Gen 5 internals and fits G45, G19X, and G19 Gen 5 frames. It is not compatible with Gen 3 or Gen 4 frames. Check the product description or contact us before ordering and we’ll confirm fitment for you.