Read of someone who tried something similar to this, but the posts stop before it says anything of it working. So not a new idea at all just don't know if it works, looking for someone smarter than me to check because I'd not like to buy a gun and realise theres a fault somewhere.
Have a normal pump handle over the barrel, a piece of metal leading to the hammer that when pulling the handle back cocks the gun, but with the handle in the idle/forward position has enough space for the bolt pin to move freely and allow the hammer to strike the poppet. To stop the gun cocking itself, I'd use a dremel or something to cut holes into the body to allow the blowback gas to escape rather than push the ram back and catch the sear, so obviously you have to cock it yourself. There would probably be a bit of fart but not enough to make a difference.
I realise a more elegant solution is to do it like this guy, http://www.youtube.c...h?v=GwJg2Z0m91I, but that involves modifying the valve, front bolt etc and I really cant be bothered.
Anyone able to fault it?