Yes.
The Glock 17 (full-size 9mm) holds 17 rounds in a factory magazine. The Glock 19 (compact 9mm) holds 15 rounds in a factory magazine. The Glock 26 (teeny-tiny 9mm) holds 10 rounds in a factory magazine. The Glock 17L/34 (competition) also holds 17 rounds.
The Glock 17 (full-size 9mm) holds 17 rounds in a factory magazine. The Glock 19 (compact 9mm) holds 15 rounds in a factory magazine. The Glock 26 (teeny-tiny 9mm) holds 10 rounds in a factory magazine. The Glock 17L/34 (competition) also holds 17 rounds.
Usually not. The 9mm Parabellum catridge is longer than the .380, as a result, a 9mm magazine is also bigger, and the magazine will not fit in the .380 magazine well.
Colt has never made a 9mm ruger combat commander
Yes, a Glock 19 9mm magazine can be used on a Glock 23 since both firearms are chambered in 9mm.
You can buy magazines that have various capacities. For some pistols, normally those shot in competition, you can get magazines that hold 20 or more. Most defensive handguns come with magazines that hold from 9 to 15. I have a magazine that holds 28 rounds of 9mm and fits a Sig 228, but it is a cheap aftermarket magazine and is extremely unreliable.
No. It depends on the make and model of your 9mm and what kind of magazine it was designed to take. In the past automatic pistols each had their own magazine and they were very seldom interchangeable. Today there is more interchangeability, but there is as yet no universal magazine that will fit into every 9mm.
no
No
Depends on which 9mm. In general most are magazine fed semi-automatic guns. Remove the magazine by pressing the magazine release. Press cartridges into the magazine, insert magazine into firearm, draw bolt or slide back, releasing it, and allowing springs to close the action.
There's no Glock with the model number "9", so I assume you mean a 9mm glock. The Glock 17 (full-size 9mm) holds 17 rounds in a factory magazine. The Glock 19 (compact 9mm) holds 15 rounds in a factory magazine. The Glock 26 (teeny-tiny 9mm) holds 10 rounds in a factory magazine. The Glock 17L/34 (competition) also holds 17 rounds. The Glock 18 (Select fire, full size 9mm) holds 33 rounds in a factory magazine. Higher capacity magazines fit and function in lower capacity firearms, for instance the model 26 can use model 17, 19, and 33 magazines.
Yes