ChaseFan9 Posted May 18, 2015 Report Share Posted May 18, 2015 The polymer lower has been out for a while now, and it's come a long way since. I wanted to get an 80% just to practice up before I go to an aluminum one, but it'll still see a good bit of use. I was wondering, can anyone speak on the strength and endurance of polymer lowers? I'm sticking with 5.56 or smaller, about how many rounda can I expect to run before I've got a broken piece of plastic? Quote Link to comment Share on other sites More sharing options...
ChaseFan9 Posted May 18, 2015 Author Report Share Posted May 18, 2015 Really, any experience with polymer lowers, 80% or otherwise, will work :) Quote Link to comment Share on other sites More sharing options...
MikedaddyH Posted May 18, 2015 Report Share Posted May 18, 2015 (edited) They work JUST fine ! I have them on .223rem , 6.8spc , .22lr and a current .40s&w ar built. Shot hundreds of 6.8 rounds (600 -700). 223 pistol (400- 600)rounds. Ar15 in 223/556 (500+)rounds. Ar in 22lr over 1500+ rounds. Plumb Crazy brand has showed no problems or wear. Edited May 18, 2015 by MikedaddyH Quote Link to comment Share on other sites More sharing options...
EasyEJL Posted May 18, 2015 Report Share Posted May 18, 2015 If you're going to build an A2 style, rainier has these on sale, and these avoid the buffer tower issues that sometimes do happen with polymers. but they aren't 80%ershttp://www.rainierarms.com/gwacs-armory-cav15-mkii-lower-receiver Quote Link to comment Share on other sites More sharing options...
blue109 Posted May 18, 2015 Report Share Posted May 18, 2015 I think sort of defeats the purpose of an 80% Quote Link to comment Share on other sites More sharing options...
AngelDeVille Posted May 18, 2015 Report Share Posted May 18, 2015 What IS the purpose of 80% lowers anyway? I can spend more, AND make the dam thing myself! Sign me the fuk up! Quote Link to comment Share on other sites More sharing options...
blue109 Posted May 19, 2015 Report Share Posted May 19, 2015 Some poor folks have to register lowers with big brother. Finishing an unserialized 80% lower is a way to avoid the paper trail. Quote Link to comment Share on other sites More sharing options...
slugger43 Posted May 19, 2015 Report Share Posted May 19, 2015 Best reason to do an 80% - in any caliber - is....because you can! The polymer ones are often cheaper. Hey, if you foook it up, go get another one and do it again! Hey, this stuff is supposed to be fun! Enjoy! Quote Link to comment Share on other sites More sharing options...
ChaseFan9 Posted May 19, 2015 Author Report Share Posted May 19, 2015 (edited) Best reason to do an 80% - in any caliber - is....because you can! The polymer ones are often cheaper. Hey, if you foook it up, go get another one and do it again! Hey, this stuff is supposed to be fun! Enjoy! This guy's got it! Do it, cuz 'Murrica <lmao> So the polymer pistol lowers hold up well? Edit: 80% lowers are good because, believe it or not, most of us don't have access to CADD or CNC Edited May 19, 2015 by ChaseFan9 Quote Link to comment Share on other sites More sharing options...
Toolndie7 Posted May 19, 2015 Report Share Posted May 19, 2015 This guy's got it! Do it, cuz 'Murrica <lmao> So the polymer pistol lowers hold up well? Edit: 80% lowers are good because, believe it or not, most of us don't have access to CADD or CNC 80% are good BECAUSE I have access to that. No jigs or drill press needed here. lol Quote Link to comment Share on other sites More sharing options...
ChaseFan9 Posted May 19, 2015 Author Report Share Posted May 19, 2015 Yeah, but you don't even need an 80%, Tool :P Quote Link to comment Share on other sites More sharing options...
snicl1 Posted May 30, 2015 Report Share Posted May 30, 2015 my plumb crazy lower is still running after about 600 rounds but the polymer FCG may have to be replaced soon. it works, but hammer (plastic) is showing signs of use. I'll replace it w/a mil spec unit when the time comes. Quote Link to comment Share on other sites More sharing options...
mrmackc Posted May 31, 2015 Report Share Posted May 31, 2015 Is that a Mattel or Hasbro Lower? Quote Link to comment Share on other sites More sharing options...
MikedaddyH Posted May 31, 2015 Report Share Posted May 31, 2015 What .... Where you expecting Body by Fisher !. LOL Quote Link to comment Share on other sites More sharing options...
D.R.D. Posted May 31, 2015 Report Share Posted May 31, 2015 I run a New Frontier LW-15 polymer lower. Runs like a top, no hiccups. Look into Robar`s PolymAR-15 or Tegra Arms composite lowers too. Quote Link to comment Share on other sites More sharing options...
mrmackc Posted May 31, 2015 Report Share Posted May 31, 2015 I think new technologies are great, Polymers, carbon composite, computer generated 3D printing and imaging and the laser target acquisition are just a few. Us old codgers appreciate the great work of folks like Jacob and Samuel Hawken , Christian Sharps, John Browning, Sam Colt, S&W, Winchester, David Marshall 'Marsh' Williams, Bill Ruger and Garand should be preserved. Quote Link to comment Share on other sites More sharing options...
unforgiven Posted May 31, 2015 Report Share Posted May 31, 2015 (edited) Got "The M1 Garand: owners guide" by Scott A. Duff great read. Edited May 31, 2015 by unforgiven Quote Link to comment Share on other sites More sharing options...
GRA Posted June 20, 2015 Report Share Posted June 20, 2015 I think new technologies are great, Polymers, carbon composite, computer generated 3D printing and imaging and the laser target acquisition are just a few. Us old codgers appreciate the great work of folks like Jacob and Samuel Hawken , Christian Sharps, John Browning, Sam Colt, S&W, Winchester, David Marshall 'Marsh' Williams, Bill Ruger and Garand should be preserved. And the late Mr. John Armstrong formerly out of Emmitsburg, MD ... <thumbsup> Quote Link to comment Share on other sites More sharing options...
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