BLACKFIN AR15 MCRR RIFLE UPPER -MARITIME CORROSION RESISTANT

AR15 Rifle Blackfin Maritime Corrosion Resistant Rifle Upper Features

• SaltWater Arms MCRR AR15 Rifle Upper with Corrosion resistant features
• Barrel Profile: AR-15 16″ 416R Stainless Steel Contour Barrel,
• 5.56 NATO, Mid Length Gas System w/ 1:8 Twist
• Muzzle Thread: 1/2-28
• Caliber 5.56 NATO
• Barrel Length: 16″
• Diameter at Gas Block: .750
• Gas Block Type: Low profile stainless steel
• Muzzle Brake Type: Stainless steel muzzle brake with crush washer
• Receiver : AR 15 Upper 6061 Billet Aluminum
• Hand Guard Type:12”” KMX Lightweight Rail
• Bolt Carrier Group : Nickel Boron ,stainless steel
• Bolt Carrier Profile: Full-Auto
• All pins ,screws ,detents Stainless steel, springs corrosion resistant
• SKU:1115B2
• UPC:684753012529

SaltWater Arms MCRR Blackfin AR15 rifle Upper, Semi auto .556 / 223. These rifle uppers are built with Maritime Corrosion Resistant features like Stainless Steel barrel and muzzle brake. Stainless Steel pins, screws, detents and corrosion resistant springs. Stainless steel / nickel boron full auto bolt carriers. If you are looking for a AR15 for marine exposure of high humidity Coastal areas this may be the rifle upper for you!