For 9mm ammunition, it is best to use *small pistol primers*. Here are several specific suggestions and things to consider: ### Primer Type - *Modest Pistol Primer*: Here is the standard primer used for reloading 9mm ammo. Brands like CCI, Federal, Winchester, and Remington all produce reliable small pistol primers. https://holdenhgzmy.shotblogs.com/look-at-dependable-manufacturers-known-for-top-quality-and-reliability-45446267