The Sanders Armory 16″ 350 Legend M4 Profile Performance Grade 416R Stainless Steel Upper Assembly. The 16″ 350 Legend Performance Series AR15 / M16 PREMIUM Upper Receiver with Steel Ejection Port Door, Charging Handle and Forward Assist. It comes with a Nitride Bolt Carrier Group and a MPI Tested Mil Spec .223/5.56 NATO/300 Blackout Nitride Bolt Head. The barrel is a Stainless Steel M4 Profile to reduce weight, accuracy and maintain consistent grouping, The Stainless Steel Barrel has a 1:16 Twist Rifling to stabilize a wider range of factory ammo and fast enough to stabalize todays sub sonic ammunition. The gas system is a Carbine Length Stainless Steel Gas Tube and a .75o Steel Gas Bock. It features a 15″ MLOK Slim line Free Float handguard with a steel barrel nut for a more rigid feel and no flex. The Muzzle thread pitch is a Industry Standard size of 5/8X24 or a 308 style muzzle devices. Any thread protector, muzzle device or suppressor produced will thread directly on to the barrel. The 16″ 350 Legend Performance Series 416R Stainless Steel Upper Assembly Upper Assembly with BCG Package includes: Sanders Armory AR15 / M16 Mil Spec AR15 / M16 PREMIUM Upper Receiver with MPI Tested Mil Spec .223/5.56 NATO/300 Blackout Nitride BCG and Bolt Head. 16″ 350 Legend Performance Series 416R Stainless Steel Barrel with a 1:16 Twist 416R Stainless Steel Barrel 15″ MLOK Slim Line Free Float Handguard Low Profile .750 Steel Gas Block with Melonite Finish Stainless Steel Carbine Length Gas Tube 5/8 X 24 A2 Birdcage Flashhider. The upper comes completely built unless requested to not assemble it. When you receive your upper you simply place it on your lower and lock the pins in. We do NOT charge for the assembly of our uppers. Shipping Limitations: Shipping is not available to the following States and/or Districts: District of Columbia (Washington, D.C.); Massachusetts; Connecticut; Illinois; New Jersey; New York State; Oregon; Washington State; Delaware; Denver, Vail County; and Boulder County Colorado; Puerto Rico; Hawaii; or Canada. No international shipping; all must be within the 48 Contiguous United States. No APO/PPO/FPOs. If an order is placed to any of these states (bill to or ship to), the order will be canceled and refunded back to the original method of payment. Thank you for understanding.
