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Thread: 100% cast polymer lower made at home?

  1. #1
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    100% cast polymer lower made at home?

    I don't want to mention any names out of respect but I saw an ad in a certain gun magazine from a company which you can cast your own 100% polymer lower at home using there mold. Accepts either mil-spec or commercial lower parts. Comes in 8 different colors. NO finishing required or machining. What's your thoughts on polymer lowers? What's your thoughts on this idea in general. Is this something to put to the test? I think it would be sweet to pour your own magazines but a 100% lower?.

  2. #2
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    As of right now it's legal if you're making the lowers only for your personal use. I have zero faith in their ability to hold up over time, and given the cost there are numerous proper lowers from reputable mfgs that fit the bill.

    It's a solution in search of a problem.

  3. #3
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    Polymer lowers are for the M&P15-22, that's where they belong. They have no business on anything else IMO, If yo uwant to se how well they hold up, research the Bushmaster "Carbon" AR, total garbage. There are a few companies still making these polymer lower AR's but that's because people keep buying them because they want to cheapest AR possible and don't really know any better.

  4. #4
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    To me it seems like a gimmick. More so pandering to the people who are snatching up 80% lowers and using a dremel tool to mill them to %100 and calling them good enough and think they're giving the govt the middle finger by making a "ghost" gun. If companies are still having problems with injection molded lowers breaking, something poured at home will definitely not last.

  5. #5
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    If you do one, might as well cast a bunch, and keep several complete lowers on you like spare mags. So when you break one, you simply perform a remedial tactical lower install drill, and get back in the fight.

    I guess I don't see a problem with polymer lowers on range guns, especially if you can just cast a new one as they break. In fact, I'm sure many would love the concept. But these have no use outside of plinking.

  6. #6
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    Howdy,

    $329 for the "Kit" to build 5 lowers?

    Ouch!

    I can buy 5 Anderson lowers for that price.

    If I want a "ghost" gun I'll just buy a lower from someone selling them at a gun show.

    Neat idea though for a "do-it-yourself" kind of guy.

    Paul

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    I haven't tried myself but someone that belongs to another forum that I discussed this with said he has built a few lightweight setups with the ATI Omni lowers and swears that even after 1000rds it still runs flawless.


    Sent from my iPhone using Tapatalk

  8. #8
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    What about 3D-printed lowers? Are those a thing?

  9. #9
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    Quote Originally Posted by Parachute Pants View Post
    What about 3D-printed lowers? Are those a thing?
    I use 3d printers at my work to show customers what there product will look like after we make extensive modifications. I'm optimistic but I don't see 3d printed gun parts having any real value, as far as a upper or lower or anything for that matter. I know the medical field is using 3d printers to make new hip replacements and knee replacements but I'm sure those printers are upwards of $1 million. And Lockheed Martin uses a sintering machine to make parts for the F-22 and F-35

  10. #10
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    Quote Originally Posted by nick1169 View Post
    I haven't tried myself but someone that belongs to another forum that I discussed this with said he has built a few lightweight setups with the ATI Omni lowers and swears that even after 1000rds it still runs flawless.


    Sent from my iPhone using Tapatalk
    On borrowed time....


    Sent from my iPhone using Tapatalk

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