MilSim Squirrel shows how they turned a CYMA AK47 into a Polish Beryl Rifle... "I have an update to our previous Airsoft Beryl Mod video that utilizes a better base gun that makes it a lot easier. I take an Airsoft AK47 (CM39U-C) 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."