LPR delete

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  • Kit
    MCB Member
    • Jul 2020
    • 452
    • Cali

    #1

    LPR delete

    Autococker pressure are between 110-120 PSI which gets me 304 fps with reballs and 280fps with paint. Body lower tube is bored 11/16 all the way thru for more air volume. Transfer port between the tubes is drilled 21/64" to better match the dye Lazarus valve port opening. Frame is moved back about 5/32" for longer hammer throw.
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    Last edited by Kit; 04-17-2026, 09:51 AM.
  • scottieb
    Member since 2004
    • Jul 2020
    • 3948
    • Lincoln, Nebraska

    #2
    What pressure is this running at then?
    FEEDBACK - https://www.mcarterbrown.com/forum/b...k-for-scottieb

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    • iamthelazerviking
      Make Paintballs 690 Again
      • Jul 2020
      • 2708
      • Staunton, VA

      #3
      Emek stock barrel turned into a barrel back is nifty
      Feedback 3.0

      Comment


      • Kit
        Kit commented
        Editing a comment
        They are only 5$ from Inceptions site.
    • superman
      MCB Member
      • Jul 2020
      • 3348
      • Mount Pleasant, SC

      #4
      I have a very similar setup i was working on. Have you tried swapping to a shocktech style bolt?
      BeardedWorks.com (Your Inception Designs and Shocktech Dealer)
      BW Youtube
      BW Ebay

      BW Email
      I buy Automags and Mag Parts also.

      Comment


      • Kit
        Kit commented
        Editing a comment
        I don't have a ShocKtech bolt in 2k length. I'm running what I believe to be a Slik nylatron bolt.

      • superman
        superman commented
        Editing a comment
        I ask as the shocktech bolts generally fair pretty well as they have a longer tip. Though depending on the setup you may have to run a shocktech ram as it has a longer stroke length too.

        That does look lik ethe Slik bolt
    • Ecapnation
      MCB Member
      • Jul 2020
      • 4209
      • South Central Long Island

      #5
      This is something I've always wanted to achieve!

      Love it!!

      Comment

      • StaticShocked
        Certified Feline Herder
        • Jun 2025
        • 347
        • Indiana, USA

        #6
        Thats awesome. Man that is a low operational pressure for an autococker. Bravo!

        Comment

        • Cdn_Cuda
          You can finish projects?!
          • Jul 2020
          • 4525
          • Vancouver, BC

          #7
          Awesome!
          Cuda's Feedback

          Comment

          • tyronejk
            Bunker Buster
            • Nov 2023
            • 369

            #8
            Wow, nice set of mods! I thought about trying to bore out the body of a Ressy with a Laz valve but didn't think about all of this other stuff you did.

            Comment

            • Aididas78
              Back in the Game
              • Jan 2023
              • 63
              • Tinkertown, Texas

              #9
              Hey so what are the actual LT dimension when you bored it out? .690? I was thinking of doing a similar build but with an Attktx gold chamber that has a spring perch. I was going to use a different valve set up. Cool custom CCM build! Doesn’t the LPR delete make trigger pull harder with it at 120psi directly to the switch and ram?

              Comment

              • Kit
                MCB Member
                • Jul 2020
                • 452
                • Cali

                #10
                I drill out the lower tube with a 21/32" (0.6562") drill bit and then finish with a 11/16" (0.6875") reamer to get a smooth finish.

                I don't feel a difference in trigger pull with the marker air up and not.

                I run the softest hammer spring from the inception master spring kit with a delrin hammer.

                The frame is sprung pretty light with springs out of the SLP spring kit from maggot on here.

                I set my LPR pressure by holding the trigger back and then trying to push the bolt forward by hand. Should take a firm push. LPR pressure to low can cause blow back up the feed neck and/or lower velocity.

                Comment

                • Aididas78
                  Back in the Game
                  • Jan 2023
                  • 63
                  • Tinkertown, Texas

                  #11
                  Hey cool thanks for the info 👍

                  Comment

                  • CavemaN
                    MCB Member
                    • Dec 2023
                    • 524

                    #12
                    Great job dude!

                    Comment

                    • RedLeaderSB
                      Stock/pump/automag
                      • Nov 2020
                      • 227
                      • SoCal

                      #13
                      How important relatively do you think the frame moving backwards is?
                      I remembered that they make closed back keenserts, was thinking of using those to handle frame screw break thru.

                      Comment

                      • Kit
                        MCB Member
                        • Jul 2020
                        • 452
                        • Cali

                        #14
                        When testing the frame set back on the s5. I saw 15-20 fps increase, but while trying to replicate the results on another body. I didn't see any increase in velocity.

                        Also more available air volume doesn't automatically results in lower operating pressure.

                        I have this wgp 2k body bored out to 0.807" right before the front sealing oring of the Lazarus valve.

                        I saw no increase of velocity and it operates at the same pressure (150 psi) as before i drill it out from 11/16" (0.687") to 20.5mm(0.807").
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                        Comment

                        • maggot
                          MCB Member
                          • Jul 2020
                          • 496

                          #15
                          damn this is phenomenal
                          My Old Feedback (300+) https://web.archive.org/web/20180112...-feedback.html

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