Ok, polymer lowers, how about a polymer upper? [Archive] - Glock Talk

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dscottw88
02-23-2012, 16:56
I know it's been done, Bushmaster has a line of carbon 15's that seem to get different vibes depending on whether the person likes plastic or not. But while researching a super light weight build, I noticed that bushmaster has stripped polymer uppers.

But what I'm asking is this; Does anyone make a monolithic polymer upper?

Here is a mock up of what I'm thinking...
http://i257.photobucket.com/albums/hh234/m4dscottw88/SuperlightARMock-up.jpg

Chowser
02-24-2012, 08:23
i will have to look, but i think my s&w mp15-22 upper is polymer.

WoodenPlank
02-24-2012, 13:30
i will have to look, but i think my s&w mp15-22 upper is polymer.

That's a dedicated .22 upper, though, not one intended for 5.56.

OP, I'd suggest sticking to aluminum. The slight weight savings you would get by going to a polymer receiver can easily be made back in other areas (barrel profile, rail/handguard, stock, etc), and the polymer receiver potentially compromises safety and reliability.

The Pirate
02-24-2012, 17:41
I own a carbon 15 stripped upper that bushmaster caused me to ruin with bad information. After seeing how week they can be I will stay away from them. Good luck


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