Rock Bottom Airsoft talks about doing AEG upgrades, showing his very first AEG and how it it has changed... "In this video we will have a look at "how far is to far" when looking at AEG upgrades. This is a huge subject and also very subjective for the individual player and replica involved. I only really touch on it here.

We are also going to have a look at my very first replica from years ago when I first started Airsoft. The CYMA CM.513 has evolved considerably and we will take a brief look at my mind set and progress when I made changes to it."