By Breandan On 04/24/2009 
I''ll start off with the only con it has- size. For CQB, I still prefer a piston-upper M-4 or M6A2 over the Sig 556 ONLY because of the size and bulk differences while operating in close quarters such as room searches. Other than that one con, it has a ton of pros- excellent reliability, good recoil reduction, accuracy, and toughness.
|