Just posted in the GFF on this and now doing it here. Gonna get a new AR. Decided on either the Ruger SR556 or Sig 516 and was wondering if anyone out there has any experience with either of these AR's? I own 2 Colt DI AR's and want a piston gun. Saw one post here where someone stated the 516was having complaints on another forum and I really had not seen that either at AR15.com or the Sig forums. I know all the other piston AR's out there but have really dicided on one of the above. Any input appreciated. Rancher Wanna kill these ads? We can help!