Just reminded me of the washing machine pump impellerI I repaired, it lasted until the motor quit.Seven years ago I used it to repair the gasket on a front loading Maytag washing machine. Still using that machine.
Bed the heel, side, and front of the receiver in the epoxy. End result, the receiver is set in epoxy, so movement when the rifle fired.
The Polytech are very nice copies of the GI M14 dimension wise. I have a couple of them, one of them I will re-barrel into 6.5