Glock 20

Why 10mm?

The 10mm Auto was designed in the 1980s as a high-performance cartridge bridging the gap between standard pistol rounds and magnum revolver cartridges. From the G20’s 4.61-inch barrel, a 180-grain 10mm load generates approximately 700 ft-lbs of energy—nearly double the 9mm and significantly more than .40 S&W or .45 ACP. This energy level makes the 10mm genuinely capable for deer and hog hunting at handgun distances, and provides meaningful stopping power against large predators. The G20’s 15-round capacity delivers that power in quantity unavailable from any comparable revolver.

Hunting Applications

The G20 is the most popular hunting handgun in the 10mm category. Deer, feral hogs, black bear, and mountain lion are all within the G20’s capability at appropriate distances with quality hunting ammunition. A 4-inch or longer scope mounted via a custom slide adapter or aftermarket optic cut puts the G20 in deer country. Hunters who prefer semi-automatic operation and high capacity over the tradition of a revolver find the G20 an excellent hunting sidearm. For hog hunting where multiple rapid shots may be necessary, the G20’s 15-round capacity is a significant advantage over the 5- or 6-shot revolvers that otherwise dominate hunting handgun use.

Bear Country Carry

The G20 is widely recommended for backcountry carry in areas with brown and black bears. The 10mm’s energy level exceeds what most experts consider the minimum for deterring a charging bear at close range, and the G20’s 15-round capacity provides more follow-up shots than any comparable revolver. Hard-cast lead bullet loads at full 10mm power penetrate deeply enough to reach vital organs from any angle. For hikers, hunters, and backcountry travelers who want a semi-automatic option for bear protection, the G20 with full-power hard-cast loads is one of the most defensible choices available.

G20 vs. G29—Full-Size vs. Compact

The Glock 29 is the compact 10mm version, reducing barrel length to 3.78 inches and capacity to 10+1. The G29 is more concealable and serves as a carry option for 10mm enthusiasts who want the caliber in a daily carry package. The G20’s full-size frame provides significantly better recoil management for the 10mm’s substantial impulse, making it more comfortable for extended shooting sessions and more accurate for hunting use. For most buyers who want the G20 for hunting or backcountry use, the full-size G20 is the right choice. The G29 makes more sense for concealed carry use where the 10mm’s power is desired in a smaller package.

Aftermarket and Upgrades

The G20 benefits from the broader Glock aftermarket while also having 10mm-specific options. Lone Wolf, KKM, and ZEV Technologies produce aftermarket barrels in standard and threaded configurations. A threaded barrel with a 10mm suppressor (yes, they exist) makes for an unusual but effective suppressed hunting setup. Aftermarket sights from Trijicon, AmeriGlo, and others fit standard Glock dovetails. The G20 MOS variant adds factory optics capability for those who want a mounted red dot or long-eye-relief scout scope for hunting. For a hunting handgun that can be extensively customized over time, the G20 has the Glock aftermarket infrastructure behind it.

Where to Go Next

Explore the full Glock lineup on our Glock brand page. For 10mm ammunition, visit our 10mm ammo page. For other hunting handgun options, see our Revolvers page covering .44 Magnum options.