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  • ChonchAR
    Member
    • Apr 2018
    • 356

    Buffer spring replacement

  • #2
    MistWolf
    Junior Member
    • Jun 2012
    • 35

    If your DD is overgassed, no amount of buffer/spring trading will fix it. Start by determining what your gas drive is, gas port diameter, gas system length & barrel length.

    Comment

    • #3
      kcheung2
      Veteran Member
      • Aug 2012
      • 4387

      Not sure what you mean by "clean" but for the "smooth" part I'd start with an adjustable gas block.
      ---------------------
      "There is no "best." If there was, everyone here would own that one, and no other." - DSB

      Comment

      • #4
        ChonchAR
        Member
        • Apr 2018
        • 356

        Originally posted by MistWolf
        If your DD is overgassed, no amount of buffer/spring trading will fix it. Start by determining what your gas drive is, gas port diameter, gas system length & barrel length.
        Whoa, let me start by looking up what all this means, still in the learning phase

        Comment

        • #5
          ZombieLivesMatter
          Veteran Member
          • Feb 2016
          • 2533

          Dunno if this is what you're looking for but one of my ARs I installed a adjustable gas block and JP silent capture buffer/spring and after tuning it fired smoooooth and was still reliable.
          Originally posted by gwgn02
          G-shock, a good way to tell the time, and better way to tell the female variety you are unworthy mating material.

          Comment

          • #6
            ChonchAR
            Member
            • Apr 2018
            • 356

            Originally posted by ZombieLivesMatter
            Dunno if this is what you're looking for but one of my ARs I installed a adjustable gas block and JP silent capture buffer/spring and after tuning it fired smoooooth and was still reliable.
            So I haven’t fully removed everything from my DD, I’m assuming to put an adjustable gas block on I’d have to remove the rails and install the gas block, then how do I test the gas setting? Take it to a range and shoot it without the rail?
            Also is it the JP scs gen2 standard?

            Comment

            • #7
              MistWolf
              Junior Member
              • Jun 2012
              • 35

              Originally posted by ChonchAR
              Whoa, let me start by looking up what all this means, still in the learning phase
              Let me help by cleaning up my punctuation-
              Originally posted by MistWolf
              If your DD is overgassed, no amount of buffer/spring trading will fix it. Start by determining what your gas drive is; gas port diameter, gas system length & barrel length.
              The semi-colan makes a difference.

              Gas drive is made up of gas port diameter, gas system length (carbine, middy or rifle being the three most common) and barrel length. The combination of the three determines how fast the expansion chamber inside the carrier fills, how hard the carrier accelerates and when the bolt unlocks (timing).

              If you have too much gas drive, recoil will likely be excessive and feel sharp. Adding a heavier buffer and/or stiffer spring may help soften the recoil, but it will still be excessive. In the short term, it seems easier and will be better than running a biffer or spring that's too light. But if you want to tune your AR correctly, you have to start by getting the gas drive right.

              There's not much you can do about gas system length or barrel length without changing barrels. But there are fixes for over sized gas ports. The easiest to use is an adjustable gas block. It will allow you to experiment to see how changes in gas flow, buffer weight and spring rate affects function and recoil.
              Last edited by MistWolf; 09-08-2018, 12:48 PM.

              Comment

              • #8
                Paloma_lone
                Member
                • Feb 2017
                • 123

                https://www.jprifles.com/document_pdfs/JPGS5rn_743.pdf
                And this: https://www.jprifles.com/document_pd...0Guide_758.pdf

                (If the pdf links are blurry, hit your refresh button after opening)

                Comment

                • #9
                  ChonchAR
                  Member
                  • Apr 2018
                  • 356

                  Originally posted by Linehand131
                  https://www.jprifles.com/document_pdfs/JPGS5rn_743.pdf
                  And this: https://www.jprifles.com/document_pd...0Guide_758.pdf

                  (If the pdf links are blurry, hit your refresh button after opening)
                  By standard I mean this https://www.riflegear.com/p-6141-jp-...-standard.aspx

                  Comment

                  • #10
                    Paloma_lone
                    Member
                    • Feb 2017
                    • 123

                    JP has 2 versions of the scs for AR-15: standard and heavy.

                    If you read the pdf link and follow the diagram, it will explain the differences and which is better suited to your rifle.

                    Comment

                    • #11
                      ChonchAR
                      Member
                      • Apr 2018
                      • 356

                      Thanks

                      Comment

                      • #12
                        kcheung2
                        Veteran Member
                        • Aug 2012
                        • 4387

                        That's a nice link to Riflegear, but the question still remains - what do YOU mean by "standard"?

                        The JPE springs come in a number of weights, and standard weight is comparable to carbine-weight buffers. So what weight buffer do you have now?

                        But really, everyone has pointed out that to get what you want, focus on tuning the gas flow via an adjustable gas block.
                        ---------------------
                        "There is no "best." If there was, everyone here would own that one, and no other." - DSB

                        Comment

                        • #13
                          ChonchAR
                          Member
                          • Apr 2018
                          • 356

                          I have an H1 buffer and I also saw a heavy jp scs, but after doing some reading I know it’s the one I have in the link to riflegear

                          Comment

                          • #14
                            hermosabeach
                            I need a LIFE!!
                            • Feb 2009
                            • 19892

                            If you want a fighting rifle, skip the adjustable block

                            There are flat springs that run nicer.

                            Some smiths also polish the outer edge of the spring so their is less friction and noise as the gun cycles

                            Flat spring

                            Last edited by hermosabeach; 09-08-2018, 5:00 PM. Reason: Add link
                            Rule 1- ALL GUNS ARE ALWAYS LOADED

                            Rule 2 -NEVER LET THE MUZZLE COVER ANYTHING YOU ARE NOT PREPARED TO DESTROY (including your hands and legs)

                            Rule 3 -KEEP YOUR FINGER OFF THE TRIGGER UNTIL YOUR SIGHTS ARE ON THE TARGET

                            Rule 4 -BE SURE OF YOUR TARGET AND WHAT IS BEYOND IT
                            (thanks to Jeff Cooper)

                            Comment

                            • #15
                              hermosabeach
                              I need a LIFE!!
                              • Feb 2009
                              • 19892

                              Not sure why any AR15 would beat up your shoulder
                              Rule 1- ALL GUNS ARE ALWAYS LOADED

                              Rule 2 -NEVER LET THE MUZZLE COVER ANYTHING YOU ARE NOT PREPARED TO DESTROY (including your hands and legs)

                              Rule 3 -KEEP YOUR FINGER OFF THE TRIGGER UNTIL YOUR SIGHTS ARE ON THE TARGET

                              Rule 4 -BE SURE OF YOUR TARGET AND WHAT IS BEYOND IT
                              (thanks to Jeff Cooper)

                              Comment

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