Bingo Airsoftworks is a sister company to Bingo Airsoft Designs, LLC. Bingo Airsoftworks focuses on custom HPA engine installations, modifications and tuning. You’ll find a wealth of information on various custom HPA airsoft gun conversions. Click here to visit Bingo Airsoftworks website.
There are also quite a few videos available on Youtube, Click here to see the Bingo Airsoftworks Youtube Channel.