US Cartridge 9mm 124 grain ammunition refers to a specific type of 9mm ammunition manufactured by US Cartridge. Here’s some information about this ammunition:

1. Caliber: “9mm” refers to the cartridge size, which is also known as 9x19mm or 9mm Parabellum. It is one of the most commonly used handgun cartridges worldwide.
2. Bullet Weight: “124 grain” indicates the weight of the bullet used in the cartridge. The grain is a unit of measurement for bullet weight, with 1 grain equal to approximately 0.0648 grams. 124 grain is a common bullet weight for 9mm ammunition and offers a balanced combination of velocity, recoil, and terminal performance.

US Cartridge is a reputable ammunition manufacturer known for producing reliable and accurate ammunition. Their 9mm 124 grain ammunition is likely designed for general-purpose use, including target shooting, training, and self-defense.