Description
Surplus Ammo & Arms Complete 16" 1:7 M4 AR-15 Yankee Hill Quad Rail Upper Receiver with Nickel Boron Carrier - 5.56 - The Surplus Ammo & Arms M-4 16" complete AR-15 upper Receiver offers unparalleled quality & accuracy with it's enhanced features that come standard.These upper receivers are built to mil-spec & are ready to mount to any mil-spec AR-15 lower receiver. We take pride in the precision craftmanship & quality components that complete these upper receivers. Fully assembled, includes bolt carrier group & charging handle. Test fired & ready to shoot.
Upper Receiver Features:
Caliber: 5.56mm NATO
Upper Receiver: Aero Precision
Upper Receiver Material: Forged 7075T6 A3 Flattop with T-Markings & American Flag
Bolt Carrier Group: SAA Nickel Boron Carrier with Phosphate Bolt
Gas Block: Double Railed Upper Height Gas Block (Same-Plane)
Gas System Length: Carbine
Front Sight: None
Barrel Length: 16"
Barrel Material: 4140 Chrome Moly
Barrel Finish: Matte Black
Barrel Profile: M4 Standard profile .750" Diameter
Twist Rate: 1:7
Flash Hider: Standard A2
Handguard: Yankee Hill Free Float Quad Rail, Carbine Length
Additional Info: Aluminum Delta Ring Assembly, M4 Style Feed Ramps, Complete with charging handle.
*All uppers have been head spaced and test fired for safety and to insure proper function.
SKU: 111abc
