What is 5.45x39 ammo?

The 5.45x39mm cartridge is a type of rifle ammunition primarily used in the AK-74 and other firearms. It was developed in the Soviet Union in the 1970s as a replacement for the 7.62x39mm cartridge used in the AK-47. The 5.45x39mm round is a smaller, lighter, and faster cartridge, designed to improve accuracy and reduce recoil.

The bullet diameter of the 5.45x39mm round is 5.6mm, and it typically weighs around 53-60 grains. The muzzle velocity of the round is usually around 2,800-3,200 feet per second, depending on the specific load.

5.45x39mm ammunition is widely used in military and civilian applications, particularly in Eastern Europe and Asia. It is known for its accuracy, flat trajectory, and relatively low recoil compared to other rifle cartridges. It is also generally affordable and widely available.