I took a 2k2 Lasoya body. Put spyder internals (bottom tube) with a spyder vertical adapter and a bob long millenium frame. unactivated the blowback and BAM.
It's an open bolt, sheridan based pump. The pump stroke cocks the hammer and lets a ball in the breech. Trigger releases hammer with attached bolt.
I am using a 2k2 VP Teflon Bolt
I still need work - most notably attach the pump. My idea is to half-block it and use a sled. I will be contacting an airsmith on MCB to work out some ideas.
It is currently running a stock spyder valve with the stock cup seal and a rifle kit cleaning rod as the valve stem. The vertical adapter is a 32 degrees. I have a few more ideas up my sleeve for the valve ( I am going to hack the 2k2 ramsleeve and use that valve and poppet)
With the new, higher flowing valve I will then mess with different spring combinations in order to use the softest main spring possible (resulting in softest possible pump stroke)
Any ideas, suggestions, comments are welcomed. I would also like to come up with a cool name for this.
Here is the video of it working: