Always Armed 4.5" 9mm Flash Can Upper Receiver - Black Anodized

Build a high-performance, ultra-compact pistol or PCC with the Always Armed 4.5" 9mm Flash Can Upper Receiver. Engineered for reliable cycling and superior durability, this complete upper receiver assembly is built on a standard Mil-Spec AR-15 upper platform, making it an ideal choice for custom AR-9 builds.

At its core is a 4.5-inch precision barrel crafted with a 1:10 twist rate and treated with a resilient Black Nitride finish for exceptional corrosion and wear resistance. Surrounding the barrel is a 5.5" Free Float M-LOK Handguard, offering plenty of rail space for lights, grips, and tactical accessories while keeping weight to a minimum. The recessed Flash Can Muzzle Device extends past the handguard to direct muzzle blast, noise, and gas forward away from the shooter. Proudly Made in the U.S.A. and finished with a durable hard-coat black anodizing.

Key Features

• 4.5" Nitride Barrel: Machined with a 1:10 twist rate for optimized stabilization of standard 9mm ammunition.
• 5.5" Free Float M-LOK Rail: Modern free-float design allows seamless attachment of M-LOK accessories while enhancing accuracy.
• Flash Can Muzzle Device: Directs muzzle flash, noise, and combustion gases forward away from the shooter for improved comfort and control.
• Mil-Spec Compatibility: Built on a Mil-Spec AR-15 upper receiver for seamless integration with standard AR-9 lower receivers.
• Hard Coat Anodized Finish: Provides maximum scratch and corrosion resistance for harsh environment performance.
• 100% Made in the USA: Machined and assembled in the United States.

Specifications

• Brand: Always Armed
• Caliber: 9mm (9x19mm Parabellum)
• Barrel Length: 4.5 Inches
• Barrel Twist: 1:10
• Barrel Finish: Black Nitride
• Handguard: 5.5" Free-Float M-LOK Rail
• Muzzle Device: Flash Can
• Receiver Material: Forged Aluminum, Mil-Spec
• Finish: Hard Coat Black Anodized
• Origin: Made in the USA
• SKU: AA45FC9MM