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  • #1
    Oldmandan
    Veteran Member
    • Dec 2012
    • 2721

    Parkerizing Questions

    I have a bunch of small parts I want to parkerize, I'm going to set up a small tank for it.

    I'm looking for a retro AR parkerizing color, is manganese without the black pre dip what I'm looking for?

    Second question, I have 2 barrels I'm going to parkerize, one is chrome lined the other is nitrided. I don't believe either needs bore plugs. Can anyone confirm?
    "To preserve liberty, it is essential that the whole body of the people always possess arms, and be taught alike, especially when young, how to use them" - Richard Henry Lee

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    • #2
      bruce381
      Senior Member
      • Feb 2009
      • 2448
      you do now u cannot park AL steel iron only. I thought early ARs were moly dri coat like spray on.

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        • #3
          smoothy8500
          Veteran Member
          • Sep 2009
          • 3846
          Generally, the Lauer manganese park I use is dark charcoal gray/almost black.

          Chrome lined doesn't need plugs, but I thought nitrided won't parkerize at all-could be wrong since I never parked anything that was nitrided.

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            • #4
              Oldmandan
              Veteran Member
              • Dec 2012
              • 2721
              Originally posted by bruce381
              you do now u cannot park AL steel iron only. I thought early ARs were moly dri coat like spray on.
              I'm looking to park sights, flash hider, safety's, etc. not receivers
              Last edited by Oldmandan; 10-28-2023, 1:10 PM.
              "To preserve liberty, it is essential that the whole body of the people always possess arms, and be taught alike, especially when young, how to use them" - Richard Henry Lee

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                • #5
                  kcstott
                  I need a LIFE!!
                  • Nov 2011
                  • 11796
                  Colt and the ordinance dept used Zinc phosphate. I've never used Zinc phosphate so I can't say what a new park job would look like.

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                    • #6
                      ar15barrels
                      I need a LIFE!!
                      • Jan 2006
                      • 57042
                      Originally posted by Oldmandan
                      I have a bunch of small parts I want to parkerize, I'm going to set up a small tank for it.

                      I'm looking for a retro AR parkerizing color, is manganese without the black pre dip what I'm looking for?
                      Yes.
                      Manganese without blackener pre-dip comes out really nice for what you are doing.
                      The left one here is manganese without pre-blackener:


                      Originally posted by Oldmandan
                      Second question, I have 2 barrels I'm going to parkerize, one is chrome lined the other is nitrided. I don't believe either needs bore plugs. Can anyone confirm?
                      Make sure the nitrided one is chromoly and not stainless.
                      Next, plug bores and chambers on both of them while you are sandblasting them to protect the bore and chamber from getting blasted.
                      Pull the plugs out before parkerizing.
                      Randall Rausch

                      AR work: www.ar15barrels.com
                      Bolt actions: www.700barrels.com
                      Foreign Semi Autos: www.akbarrels.com
                      Barrel, sight and trigger work on most pistols and shotguns.
                      Most work performed while-you-wait.

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                        • #7
                          Sailormilan2
                          Veteran Member
                          • Nov 2006
                          • 3451
                          Black/Manganese park is reusable. So, you might want to get a container to put the solution and store it for next time.

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                            • #8
                              Oldmandan
                              Veteran Member
                              • Dec 2012
                              • 2721
                              Thanks for the info guys. The nitrided barrel is a ballistic Advantage 4150v.
                              "To preserve liberty, it is essential that the whole body of the people always possess arms, and be taught alike, especially when young, how to use them" - Richard Henry Lee

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