Aim Sports AR5CUB9 Complete Build Kit 5.56x45mm NATO 10.50" Black Nitride Barrel 7075-T6 Aluminum Black Anodized Receiver 10" M-LOK Handguard for AR-15

The Aim Sports AR5CUB9 Complete Build Kit is a 5.56x45mm NATO rifle platform engineered for operators and AR-15 enthusiasts who require a compact, modular system. Featuring a 10.50-inch black nitride barrel, this build kit delivers the velocity and accuracy needed for tactical applications while maintaining a significantly shorter overall length than standard 16-inch configurations. The 7075-T6 aluminum black anodized receiver provides the structural rigidity and corrosion resistance demanded in demanding environments, while the 10-inch M-LOK handguard offers genuine accessory mounting flexibility without the weight penalty of full-length rail systems.

The 10.50-inch barrel length in 5.56 NATO represents an intentional balance: sufficient to generate reliable projectile velocity and barrel dwell time for consistent cycling, yet compact enough for vehicle operations, tight-quarters training, and transport. Black nitride finish on the barrel resists corrosion and fouling better than standard parkerize, extending maintenance intervals in field conditions. The 7075-T6 aluminum receiver is military-spec material, the same forging grade used in aerospace and defense applications, ensuring dimensional stability and impact resistance through thousands of rounds. M-LOK mounting directly addresses the modern operator's need for forward-mounted accessories—lights, lasers, or tactical grips—without the bulk and weight of Picatinny rail coverage.

This configuration serves precision rifle training, home defense setups, and designated marksman roles where compact profile is advantageous without sacrificing ballistic performance. Weighing 5.65 pounds, the system remains manageable for extended shooting sessions and CQB training. The complete build kit format accelerates assembly for those with basic gunsmithing knowledge while offering significant savings versus purchasing upper and lower assemblies separately. Operators familiar with AR platforms will find the modular design enables rapid component swaps for different mission profiles.