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  1. J

    500 atp magazine follower sticks after final cartridge

    Hello all. I've looked through the forums but can't find anything on my problem which I find hard to believe! So I refurbished a 500 ATP with a new spring. Before I fitted it into the tube I cleaned the tube of all gunk etc from the last 30 years and put a couple of drops of CLP in and swatched...
  2. J

    Mossberg Serial Number Data Base

    Hi, I'd appreciate some help from your guys knowledge. I have a 500 ATP serial j110922 from 1983 with the adjustable choke barrel. I need to replace the 8 shot mag spring. Finding part difficult to find. Can I use the 590a1 spring? If not suggestions for sourcing one please. Best J
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