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My DIY mag extension

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  • My DIY mag extension

    Since nobody makes a higher capacity magazine, or mag extension, I machined my own today. My prototype is just made out of acrylic and bolted together to test function. It bumps my 8 round magazine to a 10 round. I can fit an 11th round, but cant get the magazine to push all the way into the mag well. So, i'll need to shorten it slightly so I cant fit 11 rounds on accident.

    If it functions, it'll be made out of some impact resistant plastic, and contoured to match the grip. I wouldn't trust it with my life, but it would be nice at the range/idpa.
    Attached Files
    Last edited by GAP; 08-26-2012, 02:17 PM. Reason: typos
    IMG_0424

  • #2
    Bravo.
    Fuck you. We're going to Costco.

    Comment


    • #3
      Nicely done! Are you using the stock spring?

      Comment


      • #4
        Originally posted by ThreeFingerPete View Post
        Nicely done! Are you using the stock spring?
        Yeah, i'm not sure how the last couple rounds will cycle. There seems to be decent pressure though.
        IMG_0424

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        • #5
          Originally posted by GAP View Post
          Yeah, i'm not sure how the last couple rounds will cycle. There seems to be decent pressure though.
          I'm pretty sure that your 11th round isn't working due to coil bind. Cutting a half coil -full coil would probably let it seat and should run correctly.

          Comment


          • #6
            Nice work!
            "It is in truth not for glory, nor riches, nor honours that we are fighting, but for freedom - for that alone, which no honest man gives up but with life itself."

            Comment


            • #7
              Originally posted by ThreeFingerPete View Post
              I'm pretty sure that your 11th round isn't working due to coil bind. Cutting a half coil -full coil would probably let it seat and should run correctly.
              It looks like the legs on the fallower catch on the spring. I'll add a shallow pocket in the middle of the base to keep the spring centered.
              IMG_0424

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              • #8
                Originally posted by GAP View Post
                It looks like the legs on the fallower catch on the spring. I'll add a shallow pocket in the middle of the base to keep the spring centered.
                Say that one more time?

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                • #9
                  Originally posted by ThreeFingerPete View Post
                  Say that one more time?
                  The underside of the fallower has a leg on each end to keep it from pitching inside the mag. When fully loaded, the compressed spring leaves no room for the rear leg to move down any farther. I'm thinking if the base of the spring was centered, there will be no interference. Right now the spring naturally rests at the back side of the mag.
                  IMG_0424

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                  • #10
                    Trim a couple of millimeters off of the back leg of the follower.

                    Comment


                    • #11
                      Wow you're like Macgyver!
                      Originally posted by Nash B.
                      Damn, man. Sorry to hear that. If it'll cheer you up, Geor swallows. And even if it doesn't cheer you up, it cheers him up.

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                      • #12
                        very nice work.
                        "When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
                        "A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler

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                        • #13
                          Worked like a champ, fully cycled 6 mags. Should have the finished parts made this weekend.
                          IMG_0424

                          Comment


                          • #14
                            Originally posted by GAP View Post
                            Worked like a champ, fully cycled 6 mags. Should have the finished parts made this weekend.
                            Planning on using a black ABS next time?
                            "When the people find that they can vote themselves money, that will herald the end of the republic." -Benjamin Franklin
                            "A democracy will continue to exist up until the time that voters discover that they can vote themselves generous gifts from the public treasury." -Alexander Fraser Tytler

                            Comment


                            • #15
                              Originally posted by CJ View Post
                              Planning on using a black ABS next time?
                              I have some black cast nylon 6/6.
                              IMG_0424

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