Glock 20 slides — OEM and aftermarket options for Glock’s full-size 10mm powerhouse. The G20 is the most powerful standard-production Glock, chambered in 10mm Auto for hunting, backcountry defense, and high-energy shooting. Whether you’re replacing a worn slide, upgrading to a red dot, or building a custom 10mm platform, you’ll find the right slide here.

Our inventory covers the major G20 configurations: Glock 20 Gen 4 slides with dual recoil spring compatibility, and the Glock 20C Gen 3 compensated slide with factory dual ports for reduced muzzle rise. Optic-ready MOS configurations are available for shooters who want red dot capability on their 10mm platform.

Every slide in this category is machined from hardened steel and heat-treated specifically for the pressures and recoil of the 10mm Auto cartridge. Standard 9mm slides are not compatible — the G20 uses a larger frame, different breech face dimensions, and a heavier recoil spring assembly. Every slide here is dimensioned for the G20 platform and fit-tested before shipping.

Whether you need a stripped slide shell for a custom 10mm build or a complete assembly that’s ready to install and shoot, we’ve got you covered. All slides are backed by our fitment warranty.

Not sure which Glock 20 slide fits your frame? Gen 3, Gen 4, and Gen 5 slides are not interchangeable — each generation has its own recoil spring geometry and internal dimensions. Check the product description or contact us before ordering and we’ll confirm fitment for you.