Polymer AR-15 lower
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Old 05-17-2012, 11:11 PM   #1
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Default Polymer AR-15 lower

Have been looking into purchasing a polymer AR-15 lower. I was wondering if anyone had any experience with them. I see that they are priced really great, just want another opinion.

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Old 05-17-2012, 11:24 PM   #2
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I'd rather use a styrofoam condom. The polymer lowers have a long way to go to get to where some of us will buy them. Spend a bit more and get the aluminum.

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Old 05-17-2012, 11:27 PM   #3
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Not a fan here either.

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Old 05-17-2012, 11:33 PM   #4
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polymer ar15 lowers arent the same as polymer pistol frames. there are longer straight lines that lack substantial re-enforcement. wear points are at the receiver extension area where a LOT more force than you think happens, the sear/trigger/hammer pin holes are also areas that wear even in aluminum receivers. when a poly receiver fails its usually at the receiver extension.

if they had some extra strength in those areas they would prolly be worth taking a look. do yourself a favor and skip em till the technique is improved

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Old 05-18-2012, 02:45 AM   #5
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The only one I am trusting right now is the Navada New frontier Armory one.

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Old 05-18-2012, 03:45 AM   #6
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Id buy one, if I didn't already have a couple of strippers just collecting dust atm.

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Old 05-18-2012, 04:06 AM   #7
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I agree but would still like to see them give more attention to the rear of the receiver. It also looks like they collapsed the stock before throwing it. Alos when they used it as a step they put the weight more toward the front of the receiver. He stepped on the barrel nut. It almost seems like they were protecting the area where the receiver extension attached.

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Old 05-18-2012, 04:10 AM   #8
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If someone wants to run a torture test, give it to someone who is going to really abuse it.

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Old 05-18-2012, 04:17 AM   #9
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There is no way Polymer can stand up against 7075T6 or even 6061T6. They are showing that the lower will stand up to normal abuse from what is normal to happen to a rifle in use.

You can fire it 50K times without worry
You can drop it without worry
You can drop it real far without worry
You can subject it to extreme pressure without worry

Can you do all the same things to the extent you can with a metal AR15...No.

You need to decide if you NEED that or will what a polymer lower do is fine for you. The weight savings of a polymer rifle is appealing to many.

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Old 05-18-2012, 04:58 AM   #10
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Quote:
Originally Posted by BenLuby View Post
If someone wants to run a torture test, give it to someone who is going to really abuse it.
I'd love to do it. I'm actually thinking of getting one for personal use. However breaking my own stuff isn't high on my list. Someone send me one.

Will the thing stand up to a firm butt stroke? That's normal use for some. Hell some use their extension to do all sorts of thing during normal use. For some people using it as a bat or busting locks is normal. I broke some fairly respectable welds on an AK during what I consider normal use. I have never done anything to any firearm it wasn't designed to do.
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