SIG 556 vs 516

[Sidinman]

What is the difference between these two? I've never owned or shot any ARs, but have been wanting one for sometime now. I read the article on the 516 last month in the American Rifeman, I am going to get one sometime this year. It will be used for yotes and plinking. Thanks

[jeremy155rr]

id have to do some research but judging by looks alone....the 556 is a sig platform ar style rifle, no ar style charging handle etc...the 516 appears to be an ar15 with gas piston system. i like the 'newness' of the 556 as a combat rifle, but i know the ar15 so i would probably go with that one. the lower on the 516, i imagine, would be like that of any other ar15 so thats a plus spare part wise. that being said, if i were looking to buy a new rifle like the 556 (dmr is sweet) the sig would beat out the scar and acr on price alone. if i were looking to buy a gas piston ar, i dont know if the 516 would be my first choice, only because i dont know anything about it but the 516 does intrigue me and i will def. be taking a closer look at it.

[Guest .45]

516 is a piston-driven AR.

556 is kind of it's own animal...

never held/seen a 516 yet, but I'd be willin' to bet it'll point/balance a lot better than the 556.

for your intended use, probably couldn't go wrong with either one....

.45