The TacFire SSBU55616 5.56 NATO Black Nitride Complete Upper is built for shooters who want a dependable AR-15 upper receiver ready to drop onto their lower. Featuring a 16" black nitride barrel with an A2 flash hider and a slim M-LOK handguard, this upper balances durability, accuracy, and modern ergonomics in a clean, lightweight package.

This configuration is well suited for general range use, training, and practical carbine work where reliability and smooth handling matter. The 1:8" twist rate stabilizes a wide range of 5.56 NATO and .223 Rem loads, while the extended free-float handguard offers ample space for lights, grips, and other accessories. TacFire’s focus on solid materials and straightforward design makes this upper a strong choice for builders who value consistent performance and proven craftsmanship.

• Manufacturer: TacFire
• Model: SSBU55616
• Caliber: 5.56 NATO / .223 Rem
• Action: 5.56 NATO / .223 Rem upper receiver assembly
• Barrel Length: 16"
• Handguard Type: M-LOK free-float
• Muzzle Device: A2 Flash Hider
• Twist Rate: 1:8"