UP FOR SALE IS A COLT SPORTER II AR-15 RIFLE. DOES NOT APPEAR TO HAVE HAD MANY ROUNDS THROUGH IT. THE EXACT ROUND COUNT IS UNKNOWN. THIS RIFLE BELONGED TO MY HUSBAND THAT HAS DIED SO I DO NOT KNOW A LOT ABOUT THE HISTORY OTHER THAN THE FACT I KNOW IT HAS NOT BEEN FIRED IN AT LEAST THE 18 YEARS WE WERE MARRIED. I DID LOOKUP THE SERIAL # FOUND THAT IT WAS MADE IN 1974. THERE IS NO MAGAZINE. IT WAS LOST IN A MOVE. I HAVE TRIED MY BEST TO DESCRIBE THE RIFLE.