obviously biased, but even some people that claim to hate the Scar 17S say they love the 20S.
If you're an FN SCAR lover, the 20S is your next fling. If you aren't, well, she may very well be the one you settle down with.
www.thetruthaboutguns.com
it took a lot of convincing for a cheap skate like me to part with that much money.
in the end, i wasn't really looking for the absolute most accurate gas gun, or the one that could reach out the farthest, but just one that is at least as accurate as the 20S, that i can trust to run clean without a hitch and pound lead downrange when the zombie army attacks.
Ultimately, the simplicity, reliability and reputation for not breaking were the deciding factors that pointed me to the Scar platform.
(despite a youtube testimony to the contrary). I spoke to owners that had thousands of rounds out of their 20S without a any problems that weren't explained as not being attributed to the rifle.
/i'm not an AR guy, i am a pistol shooter that wanted to get a semi-auto centerfire rifle before i can't anymore (being in california).
i decided if i can only have one, the Scar 20S would serve as many purposes as anything.
maybe not being an AR hobbyist made it easier for be to choose a different platform.
my only hunting rifle is a lever action Winchester Model 88 in .308, also a 1:12 twist, so this simplifies my ammo requirements.
my dad bought the rifle the year before i was born.
here is a good write up on the differences