Armalite AR-18 full auto 5.56/.223REM Costa Mesa,CA.The AR-18 was designed in the early 1960's as a replacement for the AR-15 project. There were only 20,000 of these made. This has the original finish and you can tell by the original straw colored TIG welds on the receiver. This is a gas piston system to keep it cooler and cleaner while firing. The AR-18 has a side folding stock and comes with a original 1-20rd Armalite mag. This gun is in 80% condition. If you would like to see more photo's or ask questions feel free to contact us.