Air Arms S510 Magazine indexer

Forums PCP Airguns Air Arms S510 Magazine indexer

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    redcrow
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    Towards the end of today’s pellet experiments over my chronograph, a Caldwell, my S510 Xtra started to under-rotate its magazine. I could still shoot the gun if I did the pull the mag-index the next round-replace the mag routine, but I wasn’t comfy with the idea of firing a ‘wounded’ weapon. So I brought the gun in to have a better look. It didn’t take long to find the cause of its choking. That little, teeny, tiny flat springy thing that actually engages the mag and turns it was broken. I have yet to see anyone at the range with the same rifle, so I wondered…

    You needn’t be an engineer to see the inevitability of that ‘actuator’ failing given the repeated flex and then take compression cycle it sees. The fact that I was able to find a replacement piece for so obscure part so easily would lead me to think these things must break (and be replaced) often enough to justify the shelf space devoted to them.

    All of which leads me to a couple questions. First, is my assumption accurate> Do these things break that often? Second, any ideas about  how to mitigate the issue, other than laying in a stock of the part myself?

    Thanks

     

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    mmahoney
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    I’ve heard they break often when using a Rowan Engineering single shot tray. I’ve noticed all Air Arms parts are easy to obtain (a good thing). When mine broke recently it was after a couple hundred shots with the single shot tray from Rowan Engineering. When purchasing a replacement I bought an extra just in case because I like using the single shot tray.

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    bdzjlz
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    I own four AA S510s and keep a couple of extra or these on hand at all times.  I have had no issue using the Rowan tray yet and they don’t seem to have as much torque on the indexing tab as do the magazines.

    I have shots many thousands of shots through my AA rifles, and though I have experienced failures, given the usage, I have no complaint.

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    whitefox545
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    I too have had the same thing happen to my Ultimate Sporter s510  I have shot over 25000 shots from it in the last two years breaking two of them so far and expecting the third will be needed very soon. I use the Rowan SSL also, but cant say it has it happened any sooner than without, Just keep an extra with you for when it happens as IT WILL!!  You would think they would change the design (air Arms) but I guess they like selling the parts :)   Good Luck!  J.L.

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    MonsterMaxx
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    In the beginning I had the same problem with my AA S510.

    Must have replaced the spring 4 times.  Parts from AGD.

    Then I guessed that it was simply not having enough force on the magazine and also that it would work perfectly on one mag, but not the other two. 

    So I took the mag apart and gave it some silicone grease in a few strategic spots.  Reassembled and have never had a problem since.

    I’d say take your mags apart and give them a touch of grease here and there.  Particularly the detent ball.

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    spysir
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    That part normally last 10,000+ shots and then they often can be bent back but a new one is best. If they are dying prematurely something else is niot correct.
    Why oh why can AA not make a magazine as good as the RC Machine clips?
     Have an old 16mm shroud model balot action that’s never had any issue.

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    redcrow
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    I found some threads on UK airgun forums that also mentioned the problem with then RE single shot tray. I’m the second owner of this rifle, but its original owner said that he’s never used any single shot adapter or tray. In any case, copper/bronze alloys fatigue easily and are, therefore,a poor choice for any part subjected to cyclic stress like the indexer. Surely some other material, like 303 SS, would last longer. Or… Instead of a spring, why not a folding pawl?

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    LDP
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    I have no problem with mine so far in 3 years. I have read that its also linked to magazines being inserted incorrectly and heavy handed causing pressure to be put on that piece. Its not a robust part so I could see how very little incorrect pressure may start the problem or be the whole reason it breaks or bends and stops working. 

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    eodman
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    I have  an S510 and never had a problem until I tried to use JSB MK2 Pellets I bent the spring and then broke it. I always order a first aid kit on all new firearms both air and powder.
    As we all know they only break when you are having fun and away from the shop. I was able to replace the spring but never could get the MK2s to work well. You also have to tune the spring to the magazine to engage the slots.

    Also lubing the magazine  “O” ring helps a lot. 

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