[QUOTE=rphearn;137497547]So beside the forward assist and the dust cover, what else had smith skimped on the sport compared to the original MP15.
Actually, S&W used a 1-8 twist(I believe they've went to 1-9 now) Melonite treated barrel for the first Sports with a 5R rifling which is a great combo for accuracy with 55-70+ grain bullets. I own one and it works well for me as a entry level AR.
$600 is a good price. Gives you more money for ammo.
Before you spend a lot of money on gizmos, learn how to shoot the gun just as you receive it. It's addictive. I'm happy I re-load for it.
Good luck and safe shooting!
Hobie