It's definitely all original and has a bakelite (plastic) butt plate. In May, I bought a new Model 70 Featherweight (made in Columbia, South Carolina) in .308 Winchester. It's a beauty - free floating barrel, MOA adj. trigger, schnoble forend, and nice checkering. (I'm still keeping it's grandfather, though.)
I finally got to the range with the new one last month. After sighting in, I only had time to shoot one 5-shot group (it started raining), but was very pleased with the accuracy. Group measured 1.38 inches with 4 shots in 0.87 inches. Ammo was 150 grain Hornady Superformance.