submitted 4 weeks ago by literallyjustmax@forum.guncadindex.com to c/general@forum.guncadindex.com

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Howdy all,

Quick question on the BiPoly, as I've only built 80% AR builds up to this point. It doesn't appear it takes a standard buffer tube; is there a way to run a traditional stock on the BiPoly setup, or does it have to be one of the printed stocks that come with the file pack? Obviously it's not threaded for a buffer tube, but it would be great to be able to run a standard multi position AR stock on it; I haven't been super happy with the printable 3 position.

Thanks

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[-] ClemensXIV@forum.guncadindex.com 3 points 4 weeks ago

You could also print out a UBAR3 lower. It can take a standard buffer tube and it's held in place with a u-bolt so it's pretty strong. You can print it with or without an integrated pistol grip. The integrated grip is definitely stronger but not everyone will like it. https://guncadindex.com/detail/UBAR3-X:1

this post was submitted on 05 Nov 2025

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