Aim Sports AR5CUB8 Complete AR-15 Upper, 5.56 NATO, 10.50 in

Description

The Aim Sports AR5CUB8 is a fully assembled AR-15 upper built around a compact 10.50 inch barrel chambered for .223 Rem/5.56 NATO. Components include a nitride-finished 4150 CMV barrel, a mil-spec forged 7075-T6 aluminum receiver with Type III hard coat anodize, and a 10 inch M-LOK handguard for accessory mounting. The assembly ships optic-ready with no iron sights and includes a charging handle. Materials and finishes are selected for corrosion resistance and long-term durability in frequent-use environments.

Key Specifications

• The product type is a Complete upper assembly for AR-15 platforms.
• Chambering is .223 REM / 5.56 NATO as listed in the manufacturer data.
• The barrel measures 10.50 inches for a compact carbine profile.
• The barrel material is 4150 Chrome Moly Vanadium steel.
• The barrel finish is Black Nitride for improved wear and corrosion resistance.
• The barrel uses a full auto profile as specified by the manufacturer.
• The twist rate is 1:8.
• The receiver is forged 7075-T6 aluminum with black hard coat anodized finish.
• The handguard is a 10 inch M-LOK design with black hard coat anodize.
• The bolt is made from 9310 tool steel and the assembly includes a charging handle.

Compact and purpose-built, this Aim Sports upper suits builders and shooters who want a durable, low-profile carbine configuration for range work, competition, or general sporting use. The combination of a nitrided 4150 CMV barrel, hardened receiver finish, and modular M-LOK handguard delivers a practical balance of durability, accessory flexibility, and ease of maintenance.