Preban Colt Government Model AR15A2 (Model 6550), 98%. Identical to the current military model M16A2, hence the name "Government Model", except it has no three round burst. I am the original owner of this gun. Less than 200 rounds fired; cleaned, lubed, and given healthy dose of TLC after every outing. Sorry no box, didn't know it was important when I bought the gun so I tossed it. Comes with sling, manual, one 20 round mag and one 30 round mag. $1700 shipped OBO.