Alright, I've got some of it done... No pictures yet, but where I'm running into issues is how to get it to stop recocking itself after each shot. Just taking the o-ring off the hammer doesn't quite do it. It works, but it'll fire one time, then spudder, which in tern leads to chopping. How do I make it to where after that one shot, it completely stops. I saw THIS one, but he says in there it has a modified valve, and I'm not sure how I'd go about doing that.

Just for kicks, any suggestions for pump handles?

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Hehe, got a little excited and decided you convert to pumpinstead of getting a new marker? Lol

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Didn't really see all that much about what I need to do to stop the blowback.

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JB weld the hole the pin goes through to the hammer. Then drill it open again, but slightly smaller than the pin so it seals tight.

Done.

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I have seen like 2 or 3 A5 pumps picture wise but an actual operational one being used would be cool.

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That's the plan, Doc!

Thanks MAGpie!

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I've been thinking... Would it not be easier to just wrap the current pin in black tape or something? Maybe some heat seal tube stuff? JB welding and re-drilling seems like a bit of trouble. I'll do it if I gotta, but I'd rather not do anything that'll permanently jack up the valve.

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Sure. Whatever works to seal the hole and prevent off-gas reaching the hammer.

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I could see tape or heatshrink getting bound up on the pin and ripping itself apart in just a few strikes of the hammer. How about using JB weld or an epoxy do build out the OD of the pin - that way you don't risk mucking up a good valve? The valve pins are cheap to replace if you booger it up.

I did something similar to a Spyder valve pin for bolt action I once made. JB weld the pin, roughly round it with a file, then chuck it in a drill and work it with fine sandpaper until even across its length. Check the OD with a set of calipers to ensure the diameter is consistent and you should be good to go!

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Reorganizing my Photobucket Account - Please PM if you spot dead pic links...