I think if I were going for a shortened M14 style rifle I'd be very tempted by LRB's M25 Tanker (fifth rifle down).
Those are cool. I don't know about 2800 dollars cool though.
Yeah, that's my stopper too.
Buy it!! Even used, $1500 is a good price for a Socom 16 and the optic is icing on the cake. I love mine, wouldn't trade it for anything, and it is an absolute blast to shoot (no pun intended)! It's about the most fun-to-shoot gun I've ever owned.
I can vouch for the "blast" part.