For 9mm ammunition, it is best to use *small pistol primers*. Here are a few certain suggestions and factors: ### Primer Sort - *Tiny Pistol Primer*: This is actually the normal primer used for reloading 9mm ammo. Brands like CCI, Federal, Winchester, and Remington all produce reliable compact pistol primers. https://stephendqdna.shotblogs.com/think-about-reputable-brand-names-known-for-quality-and-trustworthiness-45482550