The TacFire AR-15 Barrel, 5.56x45mm NATO, 16 Inch, Black Nitride (TacFire part number BAR55618N) is a straightforward replacement barrel for AR-15 owners refreshing a worn factory barrel or building a fresh upper. At a full 16 inches, it clears the federal rifle-length minimum with no NFA paperwork required, making it a simple bolt-on for any standard rifle-configured AR-15. The barrel carries a durable black nitride finish for corrosion resistance and a 1:8 twist rate suited to a wide range of common 5.56/.223 bullet weights, from lighter varmint loads up through heavier 62-77 grain projectiles.

Key Specifications

• Chambered in 5.56x45mm NATO, also safe to fire standard .223 Remington ammunition.
• Barrel length is 16 inches, clearing the federal rifle minimum with no NFA registration needed.
• Rate of twist is 1:8, stabilizing a wide range of common 5.56/.223 bullet weights.
• Finished in black nitride for corrosion resistance and a durable, low-glare surface.
• Built as a direct replacement barrel for the AR-15 platform.

Frequently Asked Questions

What calibers does this barrel fire safely? It’s chambered for 5.56x45mm NATO and also safely fires standard .223 Remington ammunition.

What bullet weights does the 1:8 twist stabilize? A wide range, from lighter varmint bullets up through heavier 62-77 grain projectiles commonly used for longer-range work.

Is any special paperwork required to buy this barrel? No, at 16 inches it clears the federal rifle-length minimum and is an ordinary Title I part.

Buy the TacFire AR-15 Barrel, 5.56x45mm NATO, 16 Inch, Black Nitride

Order it from our Lubbock, Texas gun shop as soon as it’s available to ship. Shop more TacFire parts in our AR barrels category.