PRS Gen3 Stock won't come off ...

rustyinbend

GySgt USMC 1976-1992
Full Member
Minuteman
  • Dec 9, 2018
    3,345
    3,743
    Bend, Oregon
    Weird problem I wasn't expecting, after installing lots of these with no trouble at all. Here's the story ...

    I have a LWRCI REPR MKII Elite in 6.5 Creedmoor that I shoot suppressed, and even on the lowest gas setting, it's a bit over-gassed and ejecting around 2-o'clock (out in front of my bench). Since it's such a high-end rifle, I decided to splurge and get the heavy JP Enterprises AR10 Silent Capture Spring to get my ejections tuned correctly. This setup recommends removal of the buffer retainer plunger and spring.

    The rifle comes from the factory with a Magpul PRS Gen3 stock. Removing it (like installing it) is supposed to be simple. (1) Remove the forward QD screw and mount, (2) Remove the nearby stock keeper screw, (3) Slide the stock off the buffer tube. Um ... NO! After removing both these screws, the stock doesn't budge, even under heavy pressure and some encouragement from a hammer. I've installed several of these on other rifles, and I checked my memory by de-installing the exact same stock from a different rifle, which worked just fine.

    Any bright ideas on why this particular Magpul PRS Gen3 won't slide off the buffer tube like it's supposed to? I guess it's possible that some factory "genius" might have thought gluing it in place might be a great idea ... but that's hard to imagine.
     
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    Reactions: lash and Steel head
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    Bless you my friend ... that was the missing clue. I lowered the rubber butt-pad, loosened that screw, and the whole thing slid off smoother than a Nun at at her first Crisco Party. THANK YOU !!! I've never installed anything other than Carbine stocks. Totally didn't know about that screw required for rifle length tubes.
     
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    Reactions: Darqusoull13
    The above notwithstanding, I prefer to keep the buffer retaining pin installed. Yes, it makes removal of the SCS a bit fiddly, but the SCS doesn’t flop all around when I separate the upper from the lower. I have no need to regularly remove the SCS, but routinely transport a rifle as an upper and a lower, as they fit in a smaller case that way.
     
    The above notwithstanding, I prefer to keep the buffer retaining pin installed. Yes, it makes removal of the SCS a bit fiddly, but the SCS doesn’t flop all around when I separate the upper from the lower. I have no need to regularly remove the SCS, but routinely transport a rifle as an upper and a lower, as they fit in a smaller case that way.
    All good perspective, but for me, I prefer removing it. On my LWRCI REPR, the fit is nice and tight, and I transport in a long rifle case with no disassembly. Plus, on first attempt with the plunger in place, I had an awful time getting the SCS out ... kept lodging on the weight separation O'rings.