WHAT PISTOL USES .223 AMMO?

The .223 Remington cartridge is primarily designed for rifles, particularly the AR-15 platform. However, there are a few pistols capable of chambering .223 ammo, such as the Sig Sauer MPX and some AR-style pistols. These firearms typically feature a shorter barrel and a pistol brace to accommodate the cartridge in a more compact form. Using .223 in a pistol can provide high velocity and energy in a smaller package, but it's important to ensure the firearm is specifically designed for that caliber.