16″ 5.56mm 1:7 Twist M4 4150 Barrel (High Polish Tin Coated)

Description

This 16-inch barrel is machined from 4150 Chromoly Steel and chambered for 5.56×45 ammunition, compatible with both 5.56mm and .223 Cal rounds. It features 1:7 Twist rate to stabilize longer projectiles effectively. The exterior profile is an M4 Contour, providing a standard balance of weight and strength for AR-15 platforms. The surface is treated with High Polish Tin Coated finish, also identified in the data as a Gold Titanium Nitride Finish, which serves as an aesthetic coating that improves durability and lubricity. Gas system compatibility is defined by a .750 Gas Platform System, designed for a Mid Length Gas System configuration. The chamber includes M4 Feed Ramps to ensure reliable cartridge feeding. The muzzle terminates in a 1/2 by 28 Thread pitch, the standard interface for most AR-15 muzzle devices. Spiral Engraved Markings are present near the break for identification purposes. This component is intended for experienced builders constructing a custom upper receiver, where the specific material grade and finish characteristics are required for the build.