The TacFire 18 .308 Win Rifle Upper Assembly is a robust, plug-and-play solution designed for long-range performance on the AR-10/LR-308 platform. It features an 18 4150 steel barrel with a black nitride finish for enhanced durability and a standard A2 flash hider. The 7075-T6 aluminum receiver is black hardcoat anodized and paired with a modular M-LOK free-float handguard for mounting high-power optics and bipods. This assembly comes fully built and includes a .308 bolt carrier group (BCG) and a charging handle, making it ready to be pinned onto any compatible DPMS-pattern lower receiver. Note: The 18-inch barrel length offers increased muzzle velocity and improved ballistic performance for the .308 Winchester cartridge compared to shorter carbine versions.