Cartridge: APP_9 mm Luger Color: Black Finish: Anodized Length: 16'' Make: AR-15 Make/Model: AR-15 Muzzle: 1/2-28 Style: Complete Twist: 1-10
Manufacturer: Aero Precision Model: Caliber: Designed to chamber and fire 9mm Luger ammunition.
Threaded Barrel: The inclusion of a threaded barrel suggests compatibility with muzzle devices such as flash hiders or suppressors.
Complete Upper Receiver: Typically includes the upper receiver, barrel, handguard, and other necessary components for the upper part of the firearm. It may or may not include the bolt carrier group and charging handle, depending on how the manufacturer defines a "complete" upper.
AR-9 Platform: The upper receiver is likely designed for AR-9 or similar pistol caliber carbine platforms.
Modularity: Similar to AR-15 platforms, AR-9 systems are known for their modularity, allowing users to customize various components.
Compatibility: Check for compatibility with specific lowers or lower receiver assemblies. The AR-9 platform may have proprietary features that require matching components.