Fishbone Airsoft does an interesting test of doing a gelatin penetration test with light and heavy BBs at high FPS... "This time I have decided to answer a question I have had on my mind for some time. And I know that plenty of players have been asking the same; what is actually happening when you changing light bb's? I always wondered if heavy bb's will cause less or more destruction despite loss of velocity.

A refresher course for veterans and for newbies to learn about in maintaining their gas blowback pistols in this video by Fishbone Airsoft... "Hello Airsofters! In this movie I will show you how to keep your GBB pistol in order. This is very important lesson and could save you a lot of money if you going to follow it. Remember clean and properly greased pistol could save you from being hit."