Pneu mag air pistons

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  • big poppa fluff
    Ol skool thril junky
    • Aug 2006
    • 388

    #1

    Pneu mag air pistons

    Hi guys I'm looking for the distributor that we get the brass air pistons from for making pneu-mags. Does anyone have this Information or know somebody who does? It's not for a mag but I'm wanting to do the same concept on another marker.
  • knownothingmags
    RKM 3D Designs

    • Apr 2010
    • 4810

    #2
    I have pistons. That's about all I go with but they are steel

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    • luke
      lukescustoms.com

      • Jan 2001
      • 8211

      #3
      Originally posted by big poppa fluff View Post
      Hi guys I'm looking for the distributor that we get the brass air pistons from for making pneu-mags. Does anyone have this Information or know somebody who does? It's not for a mag but I'm wanting to do the same concept on another marker.
      Did you know that the MPA3 was never intended to be use with a ram? It's a 'pressure pilot actuator' the ram was added so the MPA3 would activate a Mag sear. The MPA3 ram's are made from 6mm stainless rod (At least that's how I use to make them) if you need brass it can be purchased in metric diameters too.

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      • big poppa fluff
        Ol skool thril junky
        • Aug 2006
        • 388

        #4
        Well I'm looking, for something similar to the ram used to push the sear but maybe bigger. I want something strong enough to active the valve pin on a tippmann 98.... Any thoughts?

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        • luke
          lukescustoms.com

          • Jan 2001
          • 8211

          #5
          I dont know the marker, sorry.

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          • big poppa fluff
            Ol skool thril junky
            • Aug 2006
            • 388

            #6
            That's hard to believe, lol

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            • rawbutter
              Registered User
              • Feb 2007
              • 1463

              #7
              Originally posted by big poppa fluff View Post
              Well I'm looking, for something similar to the ram used to push the sear but maybe bigger. I want something strong enough to active the valve pin on a tippmann 98.... Any thoughts?
              You can get an MPA-3 easily enough on eBay. They pop up all the time.

              https://www.ebay.com/i/312128452904?...3D312128452904

              An MPA-3 should be strong enough for what you want to do. I think they're rated for about 200 psi, and most pneumag designs only use 40-80 psi. I'm willing to bet your hoses or fittings will start leaking before the piston does.

              There really isn't anything else out there either. Clippard does make a few other small pistons, but they are all much longer than the MPA-3, so they might not fit inside the grip frame of a 98 (not unless you're comfortable modifying the piston). Trust me. I've looked. I've bought lots of other pistons and tried to make them work. I never found anything better than the MPA-3.

              That's why I started making my own pistons for pneumag frames.

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              • luke
                lukescustoms.com

                • Jan 2001
                • 8211

                #8
                Or just buy right from the source> https://www.clippard.com/part/MPA-3

                Stainless Steel Rod> Mcmaster Car #1272T36
                Last edited by luke; 12-10-2018, 09:00 AM.

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                • knownothingmags
                  RKM 3D Designs

                  • Apr 2010
                  • 4810

                  #9
                  Originally posted by luke View Post
                  Or just buy right from the source> https://www.clippard.com/part/MPA-3
                  For your application this would be a good idea.

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