AM rail question

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  • FredMnkyDad10
    MCB Member
    • Apr 2021
    • 2251
    • https://www.mcarterbrown.com/forum/buy-sell-trade/feedback/129612-fredmnkydad10

    #1

    AM rail question

    Can a classic rail be drilled and tapped for RT sear?
    anyone done or had this done.
    FredMnkyDad10 Feedback
  • tunaman5
    MCB Member
    • Jul 2020
    • 335

    #2
    Originally posted by FredMnkyDad10
    Can a classic rail be drilled and tapped for RT sear?
    anyone done or had this done.
    2 things here.
    The bushing in the RT sear does not fit in a mag rail so a bit of milling would need to be done to widen it.
    If you could find the exact center of the AM/MM sear pin where you would need to drill the hole for the RT sear pin would be very hard...considering the fact that the hole would need to be drilled right on the angled section of the rail.

    Comment

    • Criticalhammer
      🤜⋆。‧˚ʚ🍑ɞ˚‧。⋆🤛
      • Dec 2020
      • 294

      #3
      To reduce deflection when drilling you can use green stuff modeling epoxy to create a level platform for the drill bit to drill into. When the epoxy dries it will provide enough rigidity to help prevent deflection when drilling into angled metal. I used to do this when I would drill into metal with a shitty hand drill. Granted the epoxy may char the drill bit tip, as the epoxy material is not designed to be drilled. Clean us using break cleaner, or soak in mineral spirits and scrape away with plastic putty knife.

      https://www.dakkadakka.com/wiki/en/D...Q:_Green_Stuff

      Comment

      • rawbutter
        trophy husband
        • Jul 2020
        • 562
        • Fredericksburg, VA

        #4
        I'm sure any competent machinist with a milling machine could do it pretty easily. Heck... even I've drilled into sloped surfaces before without a problem. You start with an end mill to flatten it out and then go at it with a drill bit.

        The bigger question I have is why? What advantage do you think you will get from switching sears?
        View my feedback or read about my Virginia woodsball club.

        Let me make you something. I build pneumags, auto-response frames, and wooden pill cases.

        Comment

        • FredMnkyDad10
          MCB Member
          • Apr 2021
          • 2251
          • https://www.mcarterbrown.com/forum/buy-sell-trade/feedback/129612-fredmnkydad10

          #5
          Originally posted by rawbutter

          The bigger question I have is why? What advantage do you think you will get from switching sears?
          no advantage, someone asked me for a rail and they had mentioned that preference for their project would be an AM rail. But those do not use RT sear and they are needing to use RT sear.
          FredMnkyDad10 Feedback

          Comment

          • rawbutter
            trophy husband
            • Jul 2020
            • 562
            • Fredericksburg, VA

            #6
            Originally posted by FredMnkyDad10

            no advantage, someone asked me for a rail and they had mentioned that preference for their project would be an AM rail. But those do not use RT sear and they are needing to use RT sear.
            But why do they "need" to use an RT sear? They work exactly the same as classic sears. By the time you spend the money or time to modify an AM/MM rail, you might as well have spent the money on a new sear. It's not like classic sears are hard to come by.
            View my feedback or read about my Virginia woodsball club.

            Let me make you something. I build pneumags, auto-response frames, and wooden pill cases.

            Comment

            • LukeAO
              lukescustoms.com
              • Oct 2020
              • 172
              • Arizona

              #7
              Originally posted by rawbutter
              They work exactly the same as classic sears.
              Not true.

              Comment

              • rawbutter
                trophy husband
                • Jul 2020
                • 562
                • Fredericksburg, VA

                #8
                Originally posted by LukeAO

                Not true.
                Why not?

                View my feedback or read about my Virginia woodsball club.

                Let me make you something. I build pneumags, auto-response frames, and wooden pill cases.

                Comment

                • Jordan
                  I. Am. Canadian. 🇨🇦
                  • Jul 2020
                  • 3511
                  • Southern Ontario, Canada

                  #9
                  Originally posted by rawbutter

                  Why not?
                  I too am interested in knowing why not.

                  Comment


                  • rawbutter
                    rawbutter commented
                    Editing a comment
                    Yeah. I've seen lots of guys put x-valves on classic mags with the old rails and sears. I've run pneumags with RT valves on a classic AM/MM rail without a problem. In what situation does a classic sear not work?

                  • rawbutter
                    rawbutter commented
                    Editing a comment
                    Don't get me wrong. I'd much rather have an RT sear. The classic ones are annoying. They always seem to fall out and lose the pin whenever I take apart the mag, so I think the RT sear is far superior due to its "user friendly" design. But functionally I always thought they were exactly the same.
                • Criticalhammer
                  🤜⋆。‧˚ʚ🍑ɞ˚‧。⋆🤛
                  • Dec 2020
                  • 294

                  #10
                  Originally posted by LukeAO

                  Not true.
                  Why is that?

                  Comment


                  • Jordan
                    Jordan commented
                    Editing a comment
                    Guess we'll never know...
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