Wondering if anyone has tried using a polymer lower. Would it work?
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so right away to begin with it’s not my favorite part on the carbine to turn into polymer, lol… but it really depends on your build and the polymer, the ones with a little metal in them to connect the buffer tube i think is playing it safe. i would only use it for 556. i also have a question of my own regarding this topic and that is i wonder if the 9mm buffer less system would be just fine i mean like a giant glock??
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Even with no recoil parts on the lower, it will be subject to recoil. Most polymer lowers break between the buffer tube threading and the fire control pocket. I wouldnt trust it.
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That’s what I wondering with the bolt impacting on the back stroke. I was hoping to get a t-91 upper a few years back and asked around if the KE lower with the fixed stock would be okay. I was told it would. That’s 556 though.
this.
I had bought an ati omni years ago when they first came out. I built it and promptly sold it. even though i was going to use the CMMG 22 lr conversion kit in it, it would still produce too much stress on the area GG mentions. I’ve read since then nothing but horror stories about folks who have had these built and it snapping at the buffer tube area due to no metal reinforcement. ATI since has put metal inside their polymer lowers to reinforce this area, but i still just cant trust it… especially since for a while there a few years ago Aluminum lowers were priced so inexpensively it made no sense to compromize on the quality of the lower by going polymer. Would i use one in a TEOTWAWKI situation and my life depended on it and ihad nothing else, yes, but only until i could get something better. and well since i have an ample supply of better i do not see that scenario ever happening to me.
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