Description
Build or upgrade your ultra-compact pistol-caliber carbine with the Always Armed 4.5" 9mm TR Series Upper Receiver in Black. Precision-engineered and made in the USA, this complete upper receiver assembly is crafted on a mil-spec AR-15 upper receiver with a hard-coat black anodized finish for maximum strength and corrosion resistance.
At its core, the 4.5-inch barrel is finished in durable black nitride and features a 1:10 twist rate designed for optimal stabilization of 9mm projectiles. Enclosing the barrel is a 4-inch TR Series free-float M-LOK handguard, offering an ergonomic profile and ample rail real estate for mounting lights, grips, and tactical accessories. Fitted with a classic A2 muzzle device, this AR9 upper receiver delivers reliable performance in a compact, field-ready package.
- Caliber: 9mm (9x19mm NATO)
- Barrel Length: 4.5 inches
- Twist Rate: 1:10
- Barrel Finish: Black Nitride
- Handguard: 4" TR Series Free-Float M-LOK
- Upper Receiver: Mil-Spec AR-15 Upper Receiver
- Receiver Finish: Hard Coat Black Anodized
- Muzzle Device: A2 Flash Hider
- Origin: Made in the USA