80% lower receivers are pretty cool. They were once something that most shooters didn’t really care about, but with the current political climate, many are looking to buy the un-serialized 80% lower receivers that they can finish themselves without having to involve any paperwork or FFL or anything. Polymer80 is a new company that will begin making 80% AR-15 lower receivers later this month, out of plastic. Surely you’ve seen the finished polymer lowers, but …
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