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Fitting a Magpul PRS stock to a Umarex Colt ar 22

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I have purchased the PRS stock, it will not work on my Colt AR 22 tactical rifle.  I am trying to accomplish getting a butt-stock that has an adjustable cheek weld and if possible the adjustable rear to make the stock fit into my shoulder better.

Does anyone know if I can replace the buffer tube so that the PRS stock will fit?  Colt says the buffer tub is not replaceable.  I have found out many things about this rifle are proprietary.

Please help!

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If I remember correctly, the Colt's tube OD is smaller than both mil spec and commercial buffer tubes. I put a VLTOR stock on mine, and used teflon self adhesive tape on the inside of the stock to make it fit the Colt's tube. Good luck with yours, and let us know how it turns out.


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