Items Available For Purchase Today Object reference not set to an instance of an object. See All ADAMS ARMS MID-BASE PISTON UPPER, 5.45 x 39, NIB, FREE SHIPPING For Sale from: joe50BMG | Positive feedback: 97% View | Verified Seller | 132 Completed Sales View Sellers Items ADAMS ARMS MID-BASE PISTON UPPER, 5.45 x 39, NIB, FREE SHIPPING For Sale from: joe50BMG | Positive feedback: 97% View | Verified Seller | 132 Completed Sales View Sellers Items joe50BMG Seller Since: Feb. 2013 Identity Verified ( Murphy, NC ) This seller is NOT an FFL City: Valley Springs State: AR SOLD - $650.00 Shipping: Calculated on checkout Accepted Payment Methods: Returns: No Returns Description: Adams Arms 5.45x39 16" Mid Base Upper - UA-16-M-B-545. Factory new in Original box. The 5.45x39 Mid Base 16" Upper comes complete and ready to go onto any mil-spec AR 15 lower. This upper is built with the Adams Arms proprietary piston system. The piston system parts and the barrel have been treated with our salt nitride Meloniting process making them harder and more corrosive resistant than hard chrome. The bolt and bolt carrier have also been protected by using an ion bond finish. Now you have the ability to shoot the inexpensive corrosive mil-surp ammo without fear of the parts being unduly worn out. Each upper also comes with a 30 round magazine and a Wolff extra power hammer spring to ignite the older hardened primers. (Picture is of the Carbine Length, not the Mid-Base. Mid -Base simply has a long fore-grip.) *Weight: 4.40 lbs Specifications: Upper Receiver: A4 Flat-Top, Forged Barrel Length: 16" Barrel Contour: Government Barrel Material: 4150 Chrome Moly Vanadium Steel Muzzle Thread Pattern: 1/2"-28 Chrome Lined: No Barrel Finish: QPQ Melonite / Black Nitride Twist Rate: 1 in 8" Chamber: 5.45x39 M4 Feed Ramps: Yes Bolt Carrier: 1-Piece w/Integral Piston Strike Face Muzzle Device: A2 Flash Hider Gas System Length: Mid, Short Stroke Piston Operated Gas Block Diameter: 0.750" Handguard: 2-Piece Polymer, Mid-Length Sights: None, Single Rail Gas Block Weight: 4.40 lbs Condition: New In Box Item #: 914647908 Location: AR Trades Accepted: Yes we trade. LPKS, complete upper, stripped lower, 80% lowers in quantity. 5.45 x 39 ammo Share: Shipping Notes: FREE SHIPPING I will accept PAYPAL, as a last resort. They are VIRALLY anti-gun, anti-knife and I do not like doing any business with them, but will in order to accommodate you, the customer. I no longer accept Credit Cards through another merchant account providers as most are anti-gun also. I PREFER YOU PAY BY Postal Money Orders (immediate shipment). We can also accept Cashier's Checks, Bank Drafts, Personal Checks or Business Checks but these require 7-10 days to clear our bank. If using Paypal, send me a message or email and I will send you my Paypal email address to receive payments. My Paypal email address is DIFFERENT than my seller's email depicted on this website. Items You've Viewed Recently ADAMS ARMS MID-BASE PISTON UPPER, 5.45 x... $650.00 SELLER: joe50BMG Add To Cart