Brownells BRN-16A2 20" Classic Upper 5.56x45mm 1:7 Rifle-Length w/BCG, Black

The forged upper receiver is designed in the traditional M16A2 style, featuring a robust and highly adjustable A2 rear sight assembly. The elevation drum is adjustable for distances ranging from 300 m - 800 m, with a zero setting at 25 m for 300 m. This upper receiver lacks M4 feed ramps, consistent with the original A2 design. The included Bolt carrier group is finished with phosphate and features a chrome bore and gas key interior. The BRN-16A2 is equipped with a classic 20 inches government profile barrel chambered in 5.56x45mm, offering a distinctive appearance. The barrel includes a chrome bore and chamber with a 1:7 twist rate, optimized for M855 62 grain or heavier projectiles. The muzzle is fitted with an M16A2 flash hider, known for its effective performance. The front sight base, which is not "F" marked, includes the correct A2 square post, bayonet lug, sling swivel and triangle handguard cap. The USGI barrel nut is compatible with a variety of aftermarket handguards, ensuring the upper receiver is adaptable for future upgrades. The M16A2 style handguards provided include the standard heat shield and faithfully replicate the original A2 handguards in both appearance and functionality. All components are newly manufactured, with no use of surplus parts The M16A2 upper receiver is a critical component of the M16A2 rifle, designed to house the barrel, Bolt carrier group and other essential elements The A2 USGI rear sight assembly is a precision-engineered component designed for integration with compatible firearm platforms 20 inches barrel chambered for 5.56x45mm, featuring a 1:7 twist rate and a chrome-lined bore and chamber Bolt carrier group conforming to military specifications, featuring a phosphate-coated exterior and a chrome-plated interior