A Buffer Cartridge is a type of dummy cartridge that exactly matches the outer dimensions of the respective cartridge size, but at first glance - for example, due to a noticeable coloring - is not recognizable as a real cartridge. Buffer cartridges are made of plastic or metal. They are used for practicing/drilling or for safely relaxing weapons.
Buffer cartridges are useful in two ways: they allow for safe practice, such as quick reloading. For this purpose, the magazine of the weapon is loaded with buffer cartridges. Additionally, buffer cartridges allow for the safe and damage-free relaxation of weapons. This is advisable so that the firing pin spring is not constantly tensed, which can lead to premature wear or loss of spring tension.
To relax, the buffer cartridges are inserted into the chamber of the weapon, and the trigger(s) are pulled. In empty, i.e., without (buffer) cartridge in the chamber, struck weapons, damage can occur to the firing pin that strikes