I can’t recall what specific “forum” it was/is… maybe… I never had interactions or known any of those folks.īut I read their 6 page interaction with this poor guy. I like all my AR polymer rifles/pistols and try to give them the same amount of attention as their aluminum lower equipped siblings. I spent some time with a small tech startup and learned a bunch of fun stuff about plastic and molded injection. As already said, there are poorly manufactured lowers and it’s not indicative of polymers as a whole. I’m not going to bet my life on any kit or cheap crap don’t matter what the material is. I don’t care that the lower is polymer, I know it’s designed well and if it comes down to my life or my family, you can bet I want reliability and the lower material isn’t the priority. But if it’s a SHTF situation, I’m grabbing my SCAR 17S.
#Bushmaster carbon 15 stock crack in cold weather plus#
I also have a polymer lower mated to Palmetto 18” SS 223 Wylde upper w/ Daniel Defense furniture I’ve put 800 plus rounds through w/o a single issue so far. I’ve built multiple Aero Precision/Faxon projects that shoot sub MOA. I’ve built a few AR15/AR15 rifles, both with aluminum and polymer.
50 BMG upper on a polymer lower and whining about it breaking. Since we weren’t there to witness how they actually failed, we won’t know if this was caused by normal use, or by someone mounting a.
That part of the AR lower has a similar role, and there have already been a few broken polymer lowers floating around the internet. Much of the recoil force would cause stress on the point where the two components meet. Imagine a GLOCK pistol with a metal tube screwed into the back of the grip, which feeds into a buttstock. Part of the reason polymer pistols work so well is the lack of a buttstock component. 223 Rem/5.56 NATO is minimal, that part of the lower still bears a significant physical load. If a polymer lower was going to fail, it would be there. When you study the AR lower closely, you’ll notice the only part of the component that could face any real stress is where the buffer tube screws into the receiver. 30-caliber wood and steel rifles that felt more substantial. High-ranking brass were accustomed to large, heavy. Much of this stemmed from the partial plastic construction. The early versions of M16s had plenty of detractors both inside and outside of the Army’s weapons program.
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