this bbmg is an adaptation of my previouse piston system and is designed to be as simple as posible. note that there is no feed system yet as im still working with this design
all my theorys are available at my new website http://www.freewebs.com/jalord/index.htm
simpler bbmg
lol, visit my website (link above) this is the simpler version of the piston bbmg that i previously designed, however if you find this mind boggling then i wouldnt bother looking at the other cos it realy is complex. clever though 
devistated!!! i just built this design but i cant get it to work, i can hear a clunk as the bolt moves but it just doesnt work 
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