Poly Lowers

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11 years 6 months ago - 11 years 6 months ago #24245 by faawrenchbndr
Replied by faawrenchbndr on topic Poly Lowers
Broken receivers at the buffer tube
Broken receivers at the barrel nut
Shell deflectors falling off
Pivot pin lug on upper receiver shearing off

Those are the biggies I have seen/heard about the last few years.
They are not fit to be a .22LR, you could not give me one.


**I found a crap-load of info on Google. Searched "Bushmaster carbon 15 problem" and "Bushmaster carbon 15 failure". there is a thread going on now on GlockTalk about a Carbon 15's pivot lug shearing.
Last edit: 11 years 6 months ago by faawrenchbndr.

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11 years 6 months ago #24254 by 13fcolt
Replied by 13fcolt on topic Poly Lowers

faawrenchbndr wrote: Broken receivers at the buffer tube
Broken receivers at the barrel nut
Shell deflectors falling off
Pivot pin lug on upper receiver shearing off

Those are the biggies I have seen/heard about the last few years.
They are not fit to be a .22LR, you could not give me one.


**I found a crap-load of info on Google. Searched "Bushmaster carbon 15 problem" and "Bushmaster carbon 15 failure". there is a thread going on now on GlockTalk about a Carbon 15's pivot lug shearing.


Good call. Now I see the problems. I had done what OC did and just searched carbon 15, all I got were reviews of mediocre performance at best, a picture of a Kaboom at worst.
It seems bushy has a very difficult time controlling the consistency of the mix and little interest in the QC of the product overall.
Sad to see it happen, Bushmaster was once a top notch manufacturer.

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11 years 6 months ago #24255 by faawrenchbndr
Replied by faawrenchbndr on topic Poly Lowers
Yes Sir........exactly what happens when a big company like The Freedom Group buys Bushmaster. Whindham is a company started by old Bushmaster employees, they are said to be doing very high quality work

Remington has slacked off a good bit scince the Freedom Group took posession

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11 years 6 months ago #24261 by VTIT
Replied by VTIT on topic Poly Lowers
Yeah I won't touch Remington any more. Not even their ammo. I had a lot of trouble with the 700 I had and most of their ammo is junk. Inconsistent and not worth the money.

On the polymer issue. I have a Smith and Wesson M&P 15-22 that has over 2000 rounds through it without a hitch. It's been almost flawless. I had to change an extractor on it but that's it. I think polymer has its place but probably not yet in higher powered guns. With the work they are doing on different compounds I know they will be using it sooner or later. We already use it for stuff where I work that we would have never thought of before.
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11 years 6 months ago - 11 years 6 months ago #24263 by polymer80
Replied by polymer80 on topic Poly Lowers
Hi all,

My name is Loran and I actually own Polymer80 and I came across this thread through a google search.

I read through the entire thread and wanted to chime in, if I may, and clear some things up:

First... these are NOT 3d printed, our prototypes were in order to make sure that all of our measurements were perfect before investing 10s of thousands on the mold.

These will be injection molded with some very innovative molding techniques using nothing but the highest quality, impact resistant and industry proven polymers. You would be surprised to find out what kind of cheap polymers are used on some polymer lowers on the market.

To the best of my knowledge this is the ONLY polymer lower designed from scratch to be made from polymer specifically. If you look at the FMK, New Frontier or Plum Crazy, its a near-clone of a mil-spec/forged lower. Ours is beefed up considerably where other polymers have failed. Couple that with the higher end polymer and its (quite literally) bullet-proof.

All the smaller threads (the pistol grip and our bolt-catch pin is threaded) are stainless steel molded into the lower. These threads are more durable that what you get out of forged aluminum lowers.

The Jig system is what we are REALLY proud of... You do not need a mill or CNC. You need a vice and a hand drill. All the specialized bits come with the jig. The design makes impossible to drill too deep, keeps the bits straight and from "walking", you get near to perfect finish every time and the lower is finished in a fraction of the time.

Polymers, when done correctly (and they RARELY are), in many ways is better and stronger than metal. This is why FN builds the scar completely out of polymer (upper and lower), why Ruger has stopped making the 10/22 out of metal and is using polymer, more and more modern firarms are going polymer because when done right... it is better.

Another benefit is we can crank these out at MUCH MUCH faster rate. So shortages are not a problem here.

Anyway I hope that addresses most/all of your concerns. If I missed anything, please let me know here. Thanks everyone for discussing my product! I think this is awesome! I welcome even the most harsh critics, you will only make our product better!

Also FYI, AR10 and 1911 are under development as we speak, and yes... polymer!

Thanks!!
-Loran
Last edit: 11 years 6 months ago by polymer80.
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11 years 6 months ago #24264 by Lizardette
Replied by Lizardette on topic Poly Lowers
Welcome to the forum, Polymer80. :)

Sounds like you've got all of your ducks in a row.

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11 years 6 months ago - 11 years 6 months ago #24265 by jtallen83
Replied by jtallen83 on topic Poly Lowers
Polymer80,
You've got my attention with the price!
Could you explain the jig a little more, why the one time use?

Exactly what tools will I need to complete the lower?

Do I understand correctly that these 80% lowers are not serial numbered but still legal to own and build into a rifle?
Last edit: 11 years 6 months ago by jtallen83.

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11 years 6 months ago #24266 by polymer80
Replied by polymer80 on topic Poly Lowers

jtallen83 wrote: Polymer80,
You've got my attention with the price!
Could you explain the jig a little more, why the one time use?

Exactly what tools will I need to complete the lower?

Do I understand correctly that these 80% lowers are not serial numbered but still legal to own and build into a rifle?


The jig is one time use for several reasons:
We offer a lifetime warranty even after you finish it, but ONLY of you have used a BRAND NEW jig and bits (included with the jig) to complete it.

The jig itself is "sacrificial" meaning that you will actually be drilling through the jig itself as you drill down, keeping the bit from "walking" and ensuring a perfectly straight hole. You will be destroying the jigs further usefulness as you complete the project.

With each jig you get new bits, so each and every time you have pristine, sharp tools and perfect jig. When our lowers are seen out at the range, we want them looking good inside and out! And we want you to have the best possible product at the end.

The tools you need are the bits that are included with the jig and either a drill press or drill and vice.

And to answer your last question, yes, no serials, no registration and you can legally finish out to a complete fire arm. It does still need to comply with all federal and state laws that apply.

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11 years 6 months ago #24267 by Dabu
Replied by Dabu on topic Poly Lowers
So how do they hold up against heat? :huh: :dry:

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11 years 6 months ago #24268 by Lizardette
Replied by Lizardette on topic Poly Lowers
It's important to remember though: you can never sell that lower receiver to another person, legally.

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