LBE Unlimited ARUPPER Upper Receiver 5.56x45mm NATO 7075-T6 Aluminum Black Receiver for AR-15 Includes Forward Assist

The LBE Unlimited ARUPPER Upper Receiver for 5.56x45mm NATO represents a purpose-built component engineered for operators who demand precision and reliability in their AR-15 platform rifle. Machined from 7075-T6 aluminum, this upper receiver combines the material's exceptional strength-to-weight ratio with a dry film lube interior finish that minimizes friction and reduces required maintenance in high-round-count training and operational environments.

The 7075-T6 aluminum alloy delivers superior hardness and fatigue resistance compared to standard 6061-T6 forgings, critical when handling the sustained pressure cycles of 5.56x45mm NATO ammunition. The receiver ships with forward assist and ejection port cover assembly pre-installed, reducing assembly time while ensuring proper alignment of these functional components. The dry film lube interior provides lubricity without attracting fouling or requiring frequent reapplication—a practical advantage during extended range sessions or deployments where cleaning intervals may be extended.

This upper receiver is suited for patrol rifles, designated marksman builds, and intermediate-range carbines where weight, durability, and corrosion resistance matter. Law enforcement and military users benefit from the material's reliability across temperature extremes and harsh environments. Civilian operators and competition shooters value the repeatability and accuracy platform that a precision-forged receiver provides when paired with quality barrels and bolt carrier groups. Note that completion requires sourcing a compatible charging handle, barrel assembly, handguard, gas block, muzzle device, gas tube, and bolt carrier group.