Milsim Squirrel shows how he modified a CYMA CM40 AK74 AEG to make it look like the Polish Beryl. But if you want a shortcut to having an airsoft Beryl, Ares Airsoft makes the Beryl Mod.96 AEG... "I take an Airsoft AK74 (CM40) and provide a 'how to' on external modifications to transform it into an Airsoft Polish Beryl Variant A/B or as close as possible. The purpose of this modification is to complete the primary rifle for the Polish Grunts Airsoft Team kit."