For sale I have a Model 1 sales upper. I bought this upper at the end of the ban. I had the barrel threaded by a suppressor manufacturer, so it is concentric. Front sight base does not have a bayonet lug. Barrel is 16", 1in9 twist, heavy under the handguards, chrome moly and has midlength gas system with an A2 flash hider. Flattop upper with complete bolt & carrier group and charging handle. There are some minor marks here and there, but nothing major. This has been a great shooter, just need to move some things to finance another purchase. Asking $425 shipped and insured. MO preferred for payment. Please email with any questions. Thanks for looking!