polymer lower receiver
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Old 09-01-2013, 02:58 PM   #1
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Default polymer lower receiver

anyone have any experience with these? I was looking at them online and just kinda curious
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Old 09-01-2013, 03:01 PM   #2
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Purest s will have nothing to do with them.

I have 2 and never had a problem with them.
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Old 09-01-2013, 03:02 PM   #3
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I have a carbon 15. Works great for 5.56/.223. I haven't built a large caliber, polymer.
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Old 09-01-2013, 03:41 PM   #4
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I had a Plum Crazy poly lower. I didn't have any problems with it, but I did sell it during the craze and more than paid for my build on a standard lower.
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Old 09-01-2013, 04:00 PM   #5
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Quote:
Originally Posted by jlee0812 View Post
anyone have any experience with these? I was looking at them online and just kinda curious
If the build comes together okay, they can be fine. I've had some. I actually still have a couple. But the plastic can stretch/tear/split when hammering in a roll pin. I know this, because I've had it happen. And then your $50-100 polymer lower evolves into a conversation piece about your poor taste. I've also seen some issues (other folks' builds) with mags either not releasing or locking up properly.

So I have a pretty limited level of experience, and yet have seen a high percentage of problems. I will never buy another polymer lower myself. They can in fact be fine. But there are too many potential issues, and too many reasons to build on aluminum instead.

BTW- NFA is a better option than ATI in my opinion, but I've seen problems with each. The ATI poly lowers are actually finished nicer than NFA, but they're absolute junk. Neither makes sense when you can get outstanding aluminum lower for $90-180...including trendy name brands, fancy finishes, and billet.
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Old 09-01-2013, 04:01 PM   #6
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its not about purity

some have had problems and almost all companies that make them have reported issues with them. enough so that im not convinced the tech has advanced enough for them to be durable or reliable as a shtf gun, but should serve fine as a range or plinking type application.

i also dont think its enough of a price gap or weight gap to warrant dealing with the liekly issues that crop up with the things. i would rather spend a few more dollars and not worry about such issues.
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Old 09-01-2013, 06:43 PM   #7
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Quote:
Originally Posted by JonM View Post
its not about purity

some have had problems and almost all companies that make them have reported issues with them. enough so that im not convinced the tech has advanced enough for them to be durable or reliable as a shtf gun, but should serve fine as a range or plinking type application.
i also dont think its enough of a price gap or weight gap to warrant dealing with the liekly issues that crop up with the things. i would rather spend a few more dollars and not worry about such issues.
+1
$30 saved by getting a polymer lower seems like false economy when looking at the total cost of a rifle build.
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Old 09-01-2013, 07:27 PM   #8
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Since the lower is the serialized part of the AR and thus considered the "firearm", I'm not willing to take a chance on polymer. I know it's proven on the Glock but the AR is not a Glock.
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Old 09-01-2013, 07:43 PM   #9
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I've been seeing them for under $50 again. Not interested in building an AR right now but have been thinking about buying a couple and putting them away for the next drought/supply crunch.
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Old 09-01-2013, 09:07 PM   #10
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All good replies... I was just wondering... I was reading about some fitting issues and longevity problems about them...
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