Aim Sports AR5CUB8 | 5.56 NATO | 10.50in Nitride Barrel

This Aim Sports AR5CUB8 is a fully assembled AR-15 upper built for compact use with a 10.50 inch barrel. The assembly combines a 4150 CMV nitride-treated barrel and a forged 7075-T6 aluminum receiver finished with Type III hard coat anodize for durability. It ships optic-ready and includes a charging handle.

Product Specifications

• The manufacturer/model is Aim Sports AR5CUB8.
• The product type is a Complete AR-15 upper assembly.
• The caliber is listed as .223 REM/5.56 NATO.
• The barrel measures 10.50 inches for compact handling.
• The barrel material is 4150 Chrome Moly Vanadium steel.
• The barrel finish is Black Nitride for corrosion resistance and lubricity.
• The barrel profile is listed as a Full auto profile.
• The bolt is made from 9310 tool steel and is nitride finished.
• The receiver is forged 7075-T6 aluminum with a black hard coat anodized finish (Type III).
• The handguard is a 10 inch M-LOK free-floating style with black hard coat anodize.
• The rate of twist is 1:8″.
• Sights are None, Optic Ready.
• Includes a charging handle as part of the assembly.
• The finish type for the receiver and handguard is Black Hard Coat Anodized.
• The UPC is 815879019936.

This upper is well suited for compact carbine builds and range-focused precision work where a short, durable barrel and modular handguard are priorities. Its nitride-treated barrel and hardened bolt provide a low-maintenance platform, while the M-LOK handguard leaves room for accessories and optics. The combination of forged 7075-T6 receiver construction and Type III hard coat anodizing offers a durable foundation for sustained field use.