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  1. #1
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    Polymer AR question

    I am serious about an 80% receiver. Internet reviews are all to old or company sponsored.
    Who can comment on the best company and why? Also what about pouring own mold with a kit?
    Thanks

  2. #2
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    Lots of guys 3D printing lowers at AR15.com. pouring is probably near impossible at home. New Frontier are GTG. Mine has gone over 1100 rds so far without a hiccup. Got mine at JoeBob

  3. #3
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    Quote Originally Posted by dwcopple View Post
    Lots of guys 3D printing lowers at AR15.com. pouring is probably near impossible at home. New Frontier are GTG. Mine has gone over 1100 rds so far without a hiccup. Got mine at JoeBob
    Really, never thought pouring was all that difficult

  4. #4
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    <deleted>
    Last edited by tlagnhoj; 02-02-2018 at 12:51 PM.

  5. #5
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    Quote Originally Posted by tlagnhoj View Post
    Not at all true. Pouring would be very easy IF you know how to make the mold. HOWEVER, there would be some work that would be required after casting. The mold would almost HAVE to be a rigid mold to hold specs. So holes for the front and rear take down pins, buffer tower, mag and bolt release... Probably a few others I'm not thinking ofr at the moment would have to be finished after casting. It would probably be VERY close to doing a "0%" after the casting. However, it could be finished with a drill press and a file! If it were me doing it I would put my alignment pins for the mold in the front and rear take-down pin holes and ream to spec. after casting. The mag well COULD be cast in but other than that....

    So yes it COULD be do if you know enough about mold making. Could actually be a fun project.
    Fredom 13. They have a mold and ploymer mix that when completed gives a 100% lower with all pin holes. Is this a good idea and safe.

  6. #6
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    I was employed as a Wood Model Maker for years

  7. #7
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    <deleted>
    Last edited by tlagnhoj; 02-02-2018 at 12:52 PM.

  8. #8
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    Make the mold off an existing lower.
    You have to figure in shrink of the casting material for the mold, and for the lower

  9. #9
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    <deleted>
    Last edited by tlagnhoj; 02-02-2018 at 12:52 PM.

  10. #10
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    From the mind behind the shovel AK. https://www.ar15.com/forums/ar-15/Fr...ler_/4-676733/

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