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[muffins]

I finaly have access to some decent metal working machinery so I want to build a bulpup conversion for my vm. I have a decent idea of how the trigger transfer works, but I figured I'd find out for sure before I start. Anyone know?

thanks

[DarkNinja]

You could just make it simple and use pneumatics, run a cocker 3way in the trigger up front and have it actuate a ram that would push the trigger for you in the stock location. This seems like it would give you a really short, light and fast trigger if you did it right. Fab a mount that would bolt in where the hand guard goes to hold the ram, drill a hole in the side of the trigger and put a pivot in there. You should only need one air line running from the front to rear, you only need to push the trigger, it should reset on its own.

[HP_Lovecraft]

The one I rigged up many years ago was SUPER simple.

First, I attached one of those "barrel mounted foregrips" that TASO used to sell.

Then a drilled a hole into the grip where a trigger finger goes.

Then, back on the rear grip, I removed the lonestar grip, and on the trigger shoe, I replace one of the bolts with a longer bolt, so I could attach a wood dowel.

Basically, i feed the wood dowel THROUGH the hole in the foregrip, to the rear trigger. On the other end of the dowel, I attached another trigger shoe, and that was about it.

Worked, though the trigger was mushy, and sloppy. Thats kinda how the original VM Pullpup worked, though with better linkage.

A pneumatic system listed above will be much better, AND make the gun fire faster. It could be done with "leftover" cocker parts?

nick

[Rudisill]

If you want to go the pneumatic route, use a fabco MSV-2 valve. It has the lightest pull of any 3-way out there.

And I'd reccomend using a clippard MPA-3 or mabe SM-6 ram.

Basically the pneumatics used in a pneumag

[DarkNinja]

If I don't sell my spare parts, I am either making some pneumatic run VM to see just how fast I can get it to run mechanically or hack the crap out of one and attach a spyder e-sear tripper.

Follow up to my last post, if you have a magnum body get a 90* fitting and sidecar an LP reg. Your going to need to locate one, I doubt very much that 3ways like 800 or so psi. I have seen some really cheap front blocks going on the forums recently, if you don't have one you could probably get one for less than $40 shipped, probably much less if you look hard enough.

[Chaos]

If you want to make it like the official Bullpup stock that was made all you need is a couple pieces of delrin and a long threaded rod.

1. Fashion a trigger out of one delrin piece with a threaded hole in it for the rod
2. Put it on one end of the rod
3. Then take the other delrin piece and make a guide (Trigger Actuator) that will allow the stock trigger to rest in it and move easily while still pulling the trigger.
4. Put it on the other end of the rod
5. Then just make a frame similar to the official kit,bolt it on,and you're good to go

Here's a good site for reference
http://www.vm68.com/vm68/vm_bullpup_conversion.html