G3 Revive P1 – Airsoft Piston Preparation: Swiss Cheese & AOE

My very first Airsoft AEG was a Tokyo Marui G3-SG1.  I got it more than a decade ago, and surprisingly I still have it, or what’s left of it anyway.  It’s been some time since my work on a friend’s airsoft automatic electric gun (AEG), the TM MP5K-H v1.0, and I’ve been wanting to rebuild …