Vestigial Air-port?

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  • Watcher
    aka CavDragoneb12
    • Apr 2008
    • 867

    #1

    Vestigial Air-port?

    What is this for?






    It's 1/8" NPT threaded for air fittings... but it isn't an air-thru grip...

    So...
  • Smoothice
    Registered User

    • Nov 2006
    • 4579

    #2
    can't tell from the pics... how does it attach to the rail?

    looks like an adg bike grip. Which means it screws into a vert asa that attaches to the rail. so the air out port would be on the vert asa.

    Comment

    • jade_monkey07
      Cheater Tac one
      • Dec 2006
      • 984

      #3
      my friends was like that. the port doesnt go anywhere... its just a threaded hole to no where
      use it to screw in some rediculous contraption

      Comment

      • Smoothice
        Registered User

        • Nov 2006
        • 4579

        #4
        Originally posted by smoothice
        can't tell from the pics... how does it attach to the rail?
        .
        Now I can see it. Guess I need a bigger cell phone screen

        Comment

        • eXo_oUtSiDeR
          iN+
          • Aug 2008
          • 308

          #5
          I have one like that too, except it an rt pro foregrip.

          Comment

          • Thotograph
            I dont need 13.3 welts/sec
            • Feb 2007
            • 958

            #6
            Maybe you can drill it out to complete the air passage? I used to have one of these foregrips as well. I like the foregrips they feel very nice but I was bummed I couldn't run gas through like on my RPG Stik Grip

            Comment

            • Watcher
              aka CavDragoneb12
              • Apr 2008
              • 867

              #7
              Originally posted by jade_monkey07
              its just a threaded hole to no where
              Bingo, sorry I can't get a better pic. Every one I take straight down reflects too much and all you see is a shiny spot...

              Originally posted by eXo_oUtSiDeR
              I have one like that too, except it an rt pro foregrip.
              It is a RT Pro forgrip, I stripped the "sheath" off a bike-grip because I liked how it feels better.



              ... Why would they even put that in though, it had to cost more to drill and tap the hole than to just leave it, and it can't be weight reduction because that would just be a hole; they wouldn't bother to tap it and it would be a lot deeper...


              So what is the point, is there something that would attach there like a bipod or something? Idk...
              Last edited by Watcher; 02-26-2009, 12:54 AM.

              Comment

              • eXo_oUtSiDeR
                iN+
                • Aug 2008
                • 308

                #8
                To be honest i really don't think that there is a point. They could be some sort of leftover type things from the rt classics which were tapped and air through. They might have just not tapped them all the way. Also AGD is just weird like that lol, i know that on the back of the rt classic rail there are two holes tapped, they don' even run into the air through part of the rail. Theres no real way to explain it, agd just does some weird stuff sometimes

                Comment

                • Watcher
                  aka CavDragoneb12
                  • Apr 2008
                  • 867

                  #9
                  Originally posted by eXo_oUtSiDeR
                  AGD is just weird like that lol, i know that on the back of the rt classic rail there are two holes tapped, they don' even run into the air through part of the rail. Theres no real way to explain it, agd just does some weird stuff sometimes
                  Those two holes don't run into the air-thru channels?

                  Well, when I oil my classic sometimes a little bit seeps out of the right one. I kept meaning to take it out and re-tape it or whatever but I don't have the right size allen wrench...


                  Well, maybe I can find something cool to do with it... Maybe use it in conjunction with a t-fittting to house an LPR for a pneu setup
                  But then I'd need a second port for the ASA to run the line to the T-fitting... so really it'd be a waste of time because I could just stick it on the ASA...

                  LOL

                  Comment

                  • malJohann
                    Registered User
                    • Jan 2007
                    • 187

                    #10
                    Originally posted by Watcher
                    What is this for?
                    My Tac-One has a vertical ASA into which the bicycle grip goes, this vertical ASA has another hole threaded for an air fitting, so you can feed it air from there and macro-line directly to the valve. Has been done many times before and I'm actually amazed that you don't know what its for. The picture below shows the threaded hole in the vertical ASA on my Tac-One.

                    Comment

                    • Watcher
                      aka CavDragoneb12
                      • Apr 2008
                      • 867

                      #11
                      Originally posted by malJohann
                      My Tac-One has a vertical ASA into which the bicycle grip goes, this vertical ASA has another hole threaded for an air fitting, so you can feed it air from there and macro-line directly to the valve. Has been done many times before and I'm actually amazed that you don't know what its for.
                      Originally posted by Watcher
                      it isn't an air-thru grip...
                      Originally posted by Watcher
                      It is a RT Pro forgrip, I stripped the "sheath" off a bike-grip because I liked how it feels better.




                      Sorry about the vid quality, it's late so I was trying to be quiet, and my ceiling light isn't the best so I used a LED flashlight in my mouth...


                      I think I figured out the RT classic screws... The 3 feed ports on either side are connected via a small duct perpendicular to the large ports. They connect side to side through the Banjo-Bolt.

                      They probably had to go in through the back of the rail to mill this small duct, then they capped them with the small set-screws.

                      Why would AGD abandon reason for madness? Everything they do makes sense, when you think about them, except for this grip...

                      Comment

                      • eXo_oUtSiDeR
                        iN+
                        • Aug 2008
                        • 308

                        #12
                        pm tom kaye and ask him?

                        Comment

                        • Hilltop Customs
                          Registered User
                          • Aug 2007
                          • 1260

                          #13
                          had one like that too...

                          AGD's early attempt at UL engineering j/k

                          Comment

                          • Ninjeff
                            it only takes one.
                            • Jan 2007
                            • 1205

                            #14
                            I always figured the weird stuff AGD put on the guns like that was probably for something that never actually came out. I figure TK is a pretty smart dude, and he probably had plans for all types of stuff that just never made it to market. So, when they were making those foregrips maybe that tapped hole served a purpose for something AGD wanted to add on later, but never got around to doing.

                            Comment

                            • SSP REAPER
                              FKC Founding Member

                              • Aug 2008
                              • 1831

                              #15
                              Originally posted by eXo_oUtSiDeR
                              I have one like that too, except it an rt pro foregrip.

                              I think this one has a case of the "Drips"

                              Comment

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