A WWSD 2020 monolithic polymer lower may obviate that issue, but they aren't 80%.Polymer lowers have been proven to
break under force such as a simple drop.
It’s not that polymer is bad but the weight of the components puts too much stress on the part.
ThanksIMHO, if you are going to do an 80%, go with the metal version.
looking off paperA WWSD 2020 monolithic polymer lower may obviate that issue, but they aren't 80%.
KE ARMS LLC AR-15 KP-15 STRIPPED LOWER RECEIVERS POLYMER | Brownells
What makes this stripped lower different? The answer is simple… the KE Arms KP-15 stripped lower receiver is a monolithic polymer AR-15 style lower receiver made from injection molded, 30% glass-filled nylon. Its unique design incorporates the buf...www.brownells.com