Originally Posted by SSGN_Doc
Not intended to be hate. Just sharing info.
There seems to be enough breakages in the same areas from multiple polymer lower manufacturers to indicate a trend. f someone wants to buy a polymer lower it should be an informed decision. I'm sure that for every one of these pictures that there are far more that are problem free. Just figure folks should be aware of what the potential weaknesses are so that they can use the information to get the most out of their polymer lowers, or decide if it is worth a bit more to get an aluminum one.
it was foolish for bushmaster to make the polymer upper,,, sorry thats where most of the stress is in the system, as for Vulcan well that was not polymer that was abs plastic and thats a big no go
second pic is plum crazy/new frontier
that breakage is a mystery as to how that happened but im pretty sure that doesn't fall under "normal use"
fifth pic im really unsure how that would ever happen unless there was some sort of major failure like an out of batter fire or something,, there is literally no stress at that point
6-8th pics are a user failure by way over tightening the castle nut and not reading proper instructions
last pic i seen on another forum where the owner said it was a a KABOOM and for the life of me i cant find the original post just a bunch of fake stories and regurgitated crap about this one pic, the truth is the entire upper was split in half too,,, this was a bad KABOOM that would have destroyed a metal lower as well
almost ever one of the broken lowers on the internet were either very early design or user error not the lower failing in any way. there is even some pix where some pawn shop owners destroyed one on purpose to see how much abuse they could take (was impressive really) but those pix are being posted every with lies to back up how they really broke,,, i researched the hell out of them before i ever bought one and learned a long time ago to avoid internet know it alls and fan boys.
i personally never heard first hand from an honest owner who had one fail with out it being of some fault of there own
simple rule of thumb
any thing can be broken and if you plan on banging it around and being really hard on it in unusual ways then get a forged lower
if you just want to shoot and take care of your rifle than this will serve you for a very long time
you should hear the crap i get from the 1911 guys about my HK P-30 (.40s&w) cause its a "plastic" pistol lol,, even though it will out shoot some of the very high end 1911s and is literally better in every way
im not crapping on you at all man but please research that pic by way of uploading it to google image search before you believe the first place you see it at,, to many people do just what you did here with out knowing the full back story