Ammunition

Military ammunition is allowed some dimensional variation, civilian ammunition is fairly precisely made. Military ammunition has certain requirements (just like civilian ammunition), but these may be slightly longer or shorter than the specifications.

The looser requirements allow the ammunition to be used in the different chamber dimensions of the weapons, – resulting from production as well as heavy use. For the military, every round needs to fit and cycle out of the chamber, so looser tolerances in ammunition serve a purpose.

On the other hand, special ammunition for snipers has very precise parameters and is mass-produced.