Ammunition by firearm
What ammunition does a Glock take?
Every Glock model below is listed with the cartridge Glock publishes for it, taken from their own specifications and linked to the ammunition we stock in it. This page says what a model is chambered in. It does not tell you which load to shoot. That depends on your firearm, its condition and its manual, and it is not something a shop can answer for you from a distance.
9x19 mm (9mm Luger here)
53 in stock from $0.26/rd
Models: G17, G17L, G19, G19X, G26, G34, G43, G43X, G45, G47, G48
.40 S&W
20 in stock from $0.37/rd
Models: G22, G23, G24, G27, G35
10mm Auto
7 in stock from $0.60/rd
Models: G20, G29, G40
.45 Auto (.45 ACP here)
31 in stock from $0.42/rd
Models: G21, G30, G36, G41
Check the box. Glock writes this as .45 Auto. It is the same cartridge the industry more often calls .45 ACP, which is how it is listed here.
.45 G.A.P. (.45 GAP here)
None in stock today
Models: G37, G38, G39
Check the box. We list this as .45 GAP. It is a different cartridge from .45 Auto and the two are not interchangeable: it is shorter, and a .45 Auto round will not chamber in a pistol built for it.
.380 Auto (.380 ACP here)
27 in stock from $0.33/rd
Models: G42
.357 (.357 SIG here)
4 in stock from $0.99/rd
Models: G31, G32, G33
Check the box. Glock lists these as .357, without saying which. The cartridge is .357 SIG. .357 Magnum is a different, rimmed revolver cartridge that will not chamber in these pistols, and we sell both, so it is worth checking the box says SIG before you buy.
22 LR (.22 LR here)
24 in stock from $0.075/rd
Models: G44
Glock models, one by one
What ammo does a Glock 17 take?
Glock's published specification for the G17 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 17L take?
Glock's published specification for the G17L is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 19 take?
Glock's published specification for the G19 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 19X take?
Glock's published specification for the G19X is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 26 take?
Glock's published specification for the G26 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 34 take?
Glock's published specification for the G34 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 43 take?
Glock's published specification for the G43 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 43X take?
Glock's published specification for the G43X is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 45 take?
Glock's published specification for the G45 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 47 take?
Glock's published specification for the G47 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 48 take?
Glock's published specification for the G48 is 9x19 mm, which we list as 9mm Luger. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 22 take?
Glock's published specification for the G22 is .40 S&W. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 23 take?
Glock's published specification for the G23 is .40 S&W. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 24 take?
Glock's published specification for the G24 is .40 S&W. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 27 take?
Glock's published specification for the G27 is .40 S&W. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 35 take?
Glock's published specification for the G35 is .40 S&W. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 20 take?
Glock's published specification for the G20 is 10mm Auto. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 29 take?
Glock's published specification for the G29 is 10mm Auto. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 40 take?
Glock's published specification for the G40 is 10mm Auto. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 21 take?
Glock's published specification for the G21 is .45 Auto. That is their figure, not a recommendation from us. Glock writes this as .45 Auto. It is the same cartridge the industry more often calls .45 ACP, which is how it is listed here. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 30 take?
Glock's published specification for the G30 is .45 Auto. That is their figure, not a recommendation from us. Glock writes this as .45 Auto. It is the same cartridge the industry more often calls .45 ACP, which is how it is listed here. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 36 take?
Glock's published specification for the G36 is .45 Auto. That is their figure, not a recommendation from us. Glock writes this as .45 Auto. It is the same cartridge the industry more often calls .45 ACP, which is how it is listed here. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 41 take?
Glock's published specification for the G41 is .45 Auto. That is their figure, not a recommendation from us. Glock writes this as .45 Auto. It is the same cartridge the industry more often calls .45 ACP, which is how it is listed here. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 37 take?
Glock's published specification for the G37 is .45 G.A.P. That is their figure, not a recommendation from us. We list this as .45 GAP. It is a different cartridge from .45 Auto and the two are not interchangeable: it is shorter, and a .45 Auto round will not chamber in a pistol built for it. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 38 take?
Glock's published specification for the G38 is .45 G.A.P. That is their figure, not a recommendation from us. We list this as .45 GAP. It is a different cartridge from .45 Auto and the two are not interchangeable: it is shorter, and a .45 Auto round will not chamber in a pistol built for it. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 39 take?
Glock's published specification for the G39 is .45 G.A.P. That is their figure, not a recommendation from us. We list this as .45 GAP. It is a different cartridge from .45 Auto and the two are not interchangeable: it is shorter, and a .45 Auto round will not chamber in a pistol built for it. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 42 take?
Glock's published specification for the G42 is .380 Auto, which we list as .380 ACP. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 31 take?
Glock's published specification for the G31 is .357. That is their figure, not a recommendation from us. Glock lists these as .357, without saying which. The cartridge is .357 SIG. .357 Magnum is a different, rimmed revolver cartridge that will not chamber in these pistols, and we sell both, so it is worth checking the box says SIG before you buy. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 32 take?
Glock's published specification for the G32 is .357. That is their figure, not a recommendation from us. Glock lists these as .357, without saying which. The cartridge is .357 SIG. .357 Magnum is a different, rimmed revolver cartridge that will not chamber in these pistols, and we sell both, so it is worth checking the box says SIG before you buy. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 33 take?
Glock's published specification for the G33 is .357. That is their figure, not a recommendation from us. Glock lists these as .357, without saying which. The cartridge is .357 SIG. .357 Magnum is a different, rimmed revolver cartridge that will not chamber in these pistols, and we sell both, so it is worth checking the box says SIG before you buy. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
What ammo does a Glock 44 take?
Glock's published specification for the G44 is 22 LR, which we list as .22 LR. That is their figure, not a recommendation from us. Which load to run in a particular firearm depends on the firearm, and we do not give that advice.
Chamberings read from Glock’s published specifications on 2026-08-30. Model numbers rather than generations are listed, because a model number keeps its cartridge across generations and the generation names change. If your model is not here, the cartridge is stamped on the barrel and printed in the manual.