For 9mm ammunition, you must use *compact pistol primers*. Here are a few precise recommendations and things to consider: ### Primer Type - *Tiny Pistol Primer*: This can be the common primer useful for reloading 9mm ammo. Brands like CCI, Federal, Winchester, and Remington all make trustworthy small pistol primers. https://augustiypes.blogstival.com/53576266/look-at-trustworthy-brand-names-known-for-quality-and-trustworthiness