License holders and OEM

What is OEM?
In many commercial contexts a product can be released under one brand while in reality being manufactured by another. The actual manufacturer is called the OEM, Original Equipment Manufacturer.

This is very common in airsoft as well, and there are several companies that specializes in negotiating and maintaining licensing rights for real firearm brands which allows them to put realistic markings on airsoft replicas. For instance the ASG CZ-P09 is actually made by KJW, Umarex/Elite Force 1911 is made by KWC, and there are several Umarex Glocks with different OEMs.