The Andro Corp Industries ACI U55616ML 556 16" NATO MLOK Upper is a complete AR-15 upper receiver assembly built for dependable performance. Featuring a 16-inch 5.56 NATO barrel with a QPQ corrosion-resistant finish and A2 flash hider, it pairs a mid-length gas system with M4 feed ramps for smooth cycling and consistent accuracy. The 15" MLOK handguard with integrated QD sling swivel sockets offers generous mounting space while keeping the front end slim and controllable.

This upper is ideal for range use, training, and general-purpose rifle builds where reliability and modularity matter. The 7075-T6 mil-spec upper receiver includes forward assist and ejection port assembly, and can be ordered with or without the included M16 bolt carrier group and charging handle to match your build needs. Backed by Andro Corp Industries’ focus on quality AR components, it provides a solid foundation for a refined and versatile AR-15.

• Manufacturer: Andro Corp Industries
• Model: ACI U55616ML 556 16" NATO MLOK Upper
• Caliber: 5.56 NATO
• Barrel Length: 16"
• Gas System: Mid Length
• Twist Rate: 1/7
• Handguard: 15" MLOK With Integrated QD Sling Swivel Sockets
• Upper Receiver: 7075-T6 Mil-Spec With T-Markings
• Muzzle Device: A2 Flash Hider, 1/2x28 Threaded
• Bolt Carrier Group: M16 BCG (option available)
• Includes: Charging Handle (option available)