Quick view Ruger Ruger Ar-556, Rug 8500 Ar556 223 16 Fld Blksyn 30r $665.00 $532.00 Ruger's ar-556 is made from 7075-t6 hard-coat anodized aluminum forgings, shot-peened and proof-tested 9310 steel bolt, and 8620 steel bolt carrier.Its barrel nut and delta ring allow easy, one-person service of the heat-resistant glass-filled nylon... Compare Add to Cart