I am partial to milled receiver guns, the FN FAL in particular. I have a G3 and there’s nothing wrong with it. It shoots fine. It’s a sheet metal gun and I knew that when I bought it. It feels like a sheet metal gun. It doesn’t have the solid feel of milled gun, like your M1. As long as you are good with that, it’s a good value for the money NEW gun. $850 CDNN SPORTS - PTR 91 308 16 INCH PARKERIZED WOOD STOCK 20RD
Plastic furniture doesn’t bother me. It’s just furniture. However, the plastic lower receiver is something I would change. robertrtg.com has steel lower receivers and selectors for them.