# The Importance of Primer Technology in Ammunition Reliability Primer technology is one of the most critical components in ammunition ignition systems. It determines how consistently a cartridge ignites under firing conditions. 9mm ammo uses centerfire primers designed for reliable ignition in high-volume semi-automatic use. .223 ammo also uses centerfire primer systems opti... https://bulkammotogo.com/product-category/ammunition/handgun-ammunition/9mm-luger/