Advantage Arms .22lr Conversion Compatibility with Polymer 80

Discussion in 'General Firearms Forum' started by JAA, Nov 25, 2018.

  1. JAA

    JAA

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    Good luck in getting to the solution. It’s fun to shoot whether a Glock or Polymer 80 frame.


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  2. JAA

    JAA

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    For what it’s worth looking closer at your pic, the slide lock pin is not in the up position with the slide removed. See my pic below. From my experience (I’m not gunsmith) when I’ve had a functioning issue with my AA slide & Poly 80 frame it always came back to the Slide Lock not being properly seated. I have 2 9MM slides that I also run on my Poly 80 frame. One with a red dot and one with irons. I interchange them frequently w/o issue. The only slide I have issue with when I interchange them is the AA slide. It takes some tweaking each time to get the slide lock in proper position. Just my experience. Good luck!
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  3. Lot

    Lot

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    Yep, I agree, that's what I was referring to in my first post about the SLL not going up all the way, and I wanted to attach the pic so other people could see the issue on the actual gun in question.

    When you say that yours takes some tweaking, did this tweaking get easier over time? Do you have a sense of which specific engagement surfaces aren't quite meshing ideally?
     
  4. JAA

    JAA

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    Quick background, have in excess of 3,000 rnds on my Poly 80 frame with ~1700 of the rnds coming from my AA slide. Having said that, never had any issues with fit/functioning of the 9MM’s 80percentglock slide or the Swenson optic cut slide. I would change these slides out during steel challenge matches to shot RD & irons for speed comparisons.
    When I got my AA slide, it worked great from day one on my Poly 80 frame. In fact, I used it for steel Challenge and swap it back & forth with one or the other 9MM slides for seed comparisons.
    Having said that, once I approached ~700 rnds on the AA slide it became more difficult to interchange it at matches with one of the 9MM slides like I use to do in the beginning. At a 1,000 rnds I could not switch it efficiently at the steel matches for my next time up due to the tweaking it needed. So now I oil it up put it on my Poly 80 frame and it stays there from start to finish.
    So after all of that verbiage, to answer your question it has gotten worse over time where the 9MM slides have stayed the same or gotten easier over time to install & remove.
    Does it go back to the SLL spring or the AA unit interns of how the recoil spring/barrel fit in the frame. I don’t know. I make a habit now of when changing out the slide or cleaning, I use a ouch to press on the SLL Spring to insure its seated. However I still spend more time tweaking the AA slide to get the SLL in the up position on the frame.
    Good luck


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  5. Lot

    Lot

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    No solution yet, but I've posted a reddit thread as well (link) so i wanted to have the pics here for other people who may have a similar issue and we can help each other troubleshoot.

    The difference in the locking lugs of the barrel is what I suspect to be the issue.

    The OEM has a slightly longer "flat" area, and shorter "angled" area than the Advantage arms

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    But, given that, I have no idea what to do.

    I also suspect perhaps there's some difference in angle of the locking block? So the rear "tail" of the AA barrel's lug engages differently than the OEM barrel (which explains why the AA kit works OK on the OEM frame vs. the P80 frame)

    [​IMG]
     
  6. Lot

    Lot

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