Not milspec - Guntec USA AR-15 Stripped Billet Upper Receiver

This is a machined piece but I feel confident it is not forged. After installing a barrel at 50lbs of torque, The bolt carrier group seemed in a slight bind with this receiver. I suspect that its too soft a metal used and even though it had a nylon peice inserted to keep integrity, it tweeked under torque of barrel installation. I now only use forged receivers that are military spec. It looked cool but is nothing more than a paperweight.