A guilty pleasure for those who spend time in upgrading their airsoft guns is combing YouTube to find the latest airsoft custom work. In this case, Airsoft GI Uncut got what they call their "Arsenal" series where their GIs show their custom work and in this case, it is GI Zach who talks about his Custom MK18 Mod1.

Click here to find the complete list of items he got to put his custom gun together.