Glock 20
10mm power in a polymer frame · Backcountry defense · Handgun hunting
| Manufacturer | Glock |
|---|---|
| Category | Handguns |
| Caliber | 10mm Auto |
| Action | Striker-fired semi-automatic |
| Barrel length | 4.61 in |
| Capacity | 15+1 |
| Weight | 30.7 oz |
| Introduced | 1991 |
About the Glock 20
The Glock 20 brings 10mm Auto into a full-size polymer frame with a 15-round magazine, giving woods carriers a handgun that reaches rifle-adjacent velocity from a 4.61-inch barrel. The dual recoil spring tames the cartridge's snap, and the frame runs slightly wider than a 9mm Glock to seat the longer case. Hunters use it as backup in bear country, and the same platform feeds hard-cast loads without drama. Magazine options are narrower than the 9mm catalog, but the pistol shares the brand's parts commonality, armorers' knowledge, and simple maintenance routine.
Best ammo for the Glock 20
Live picks from Top Ammo Supply — in-stock 10mm Auto ammunition, sorted by price per round. Prices and stock refresh throughout the day.
10mm Auto training & range ammo
Full metal jacket and lead loads — the cheapest way to train.
FederalFEDERAL CHAMPION 10MM AUTO AMMO 180GR PLATED FMJ BRASS CASED 200RD BOX 1000rd$442.79$0.443/rdFederalFEDERAL CHAMPION 10MM AUTO AMMO 180GR PLATED FMJ BRASS CASED 200RD BOX 200rd$90.29$0.451/rdFederalFEDERAL CHAMPION 10MM AUTO AMMO 180GR PLATED FMJ BRASS CASED 200RD BOX 50rd$23.75$0.475/rd
CCICCI BLAZER 10MM AUTO AMMO 180GR FMJ BRASS CASED 50RD BOX 50rd$26.46$0.529/rd10mm Auto defensive loads
Hollow points tested for duty and self-defense use.
WinchesterWINCHESTER DEFENSE 10MM AUTO AMMO 180GR JHP BRASS CASED 50RD BOX 50rd$26.99$0.540/rd
FiocchiFIOCCHI DEFENSE DYNAMIC 10MM AUTO AMMO 180GR H0LLOW POINT BRASS CASED 50RD BOX 1000rd$593.99$0.594/rdFiocchiFIOCCHI DEFENSE DYNAMIC 10MM AUTO AMMO 180GR H0LLOW POINT BRASS CASED 50RD BOX 50rd$32.40$0.648/rdFiocchiFIOCCHI DEFENSE DYNAMIC 10MM AUTO AMMO 180GR H0LLOW POINT BRASS CASED 50RD BOX 500rd$324.00$0.648/rdFull selection: Browse all 10mm Auto ammunition at Top Ammo Supply →
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Related firearms
Specifications are approximate and can vary by variant and production year. Verify with the manufacturer before purchase. Ammunition purchase and shipping restrictions vary by jurisdiction — Top Ammo Supply enforces shipping rules at checkout.