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. Generally speaking, you can only use the correct caliber magazine for any given handgun, and .380 and 9mm are not interchangeable.
No.
9mm MKV is not the same as 9mm Luger.
If they use the clip system (CS) all magazines are compatible.
No. Most 9mm pistols are fitted for 9x19 rounds, but a few use 9x21mm. or 9x17, or 9x18, or 9x20
No such thing as a clip for the 915. The magazine from a model 39 might fit.
The Uzi magazine is not compatible with any types of pistols.
The Clip that holds the bullets inside and automatic or any clip that holds bullets ready to load. http://www.minutemanreview.com/2008/09/clip-vs-magazine-lesson-in-firearm.html
Usually a spring holds the MAGAZINE in place. I don't know of any .22 rilfe that uses a clip.
No. There are more than a dozen DIFFERENT "9mm" cartridges, and they do not interchange. The most common is 9mm Parabellum- also known as 9mm Luger or 9x19. It does NOT interchange with 9mm Kurz, 9mm Corto, 9mm Makarov, 9mm Ultra, etc.
There were several types of 9mm ammunition made. The most common is the 9x19, also known as 9mm Parabellum or 9mm Luger. If your firearm is marked as any of those, than this is the only type of 9mm ammunition it can facilitate. If you are uncertain about which type of ammo can be used with your firearm, consult a gunsmith.
What kind of gun? Most gunshops sell magazines and if they don't have any for the particular model, they can probably suggest where to get them.