Find out what this project of Fulcrum is all about in this video... "Try this at your own risk!

I've been meaning to convert my Double Eagle UMP45 into a cheap silent airsoft HPA SMG. And now I finally have found time to do so, I want to do something a little different...

So what can we do with a £7 pneumatic cylinder and a 3D-Printed airsoft HPA engine? Let's have a bash and see what happens...

The circuitry has been featured on this channel before, instead of using a D882 or similar I tried a 2N2222. Seems to work just fine."