You might want to check out the Springfield M1A SOCOM. It has a flat top receiver with rails so you can mount a scout scope on it along with lots of other goodies. .308 cal. Very accurate right out of the box. Kinda pricey though.
Yeah, am thinking about the Springfield M1 as well, but like the “M-16” feel of the AR-10.
I shoot the Springfield M1A and I love it.
I passed on the SOCOM because I was hearing all kinds of problems with accuracy beyond 100 yrds.
I think it is due to a 16” barrel.
I went with 18 and it’s fabulous....
Best part is if I run out of ammo it is easily converted to a bat for clubbing zombies .....