I have one... and it can put 20 rds.of LC 7.62 NATO ball into a 4" red dot at 100 meters... in less than 1 minute.
I shoot beer cans at 200 meters and usually hit them! I seldom see Poly's forr sale... there is a reason for that. Their receivers and chrome lined barrels are better than any of Springfield or even the LRB's that are selling for $1800+.
Yes, my Poly has been worked on by a Marine Armourer. It has a Wn. Bolt and is steel bedded into military birch stock, it has a Sadlak titanium scope mount, Badger Ordinance rings, and a 10X SWFA Super Sniper mildot scope.
If anybody tells you M-14S Poly Techs are no good.... tell them to go pound sand!