The Stern Defense 16.1-Inch Barrel (brand part no. 006-9MM BARREL16.1INCH-D1-M) is a 9mm AR-15 replacement barrel machined from 4150 chrome-moly steel and finished in Melonite for corrosion and wear resistance. Stern Defense cuts this barrel with a 1:10 twist rate and 1/2-36 muzzle threads, giving pistol-caliber carbine builders a durable, made-in-the-USA option for a fresh build or a worn-barrel replacement. The 16.1-inch length clears the 16-inch minimum barrel length federal law requires for a standard rifle configuration, keeping the build out of NFA short-barreled-rifle territory while staying legal.

Key Specifications

• Chambered for 9mm Luger.
• Measures 16.1 inches in length.
• Threaded 1/2-36 at the muzzle.
• 1:10 twist rate.
• Machined from 4150 chrome-moly steel.
• Finished in Melonite for corrosion and wear resistance.
• Ships with no sights installed.
• Non-fluted profile.
• Made in the USA.

Frequently Asked Questions

What caliber is this barrel chambered in? 9mm Luger.

What is the twist rate? 1:10.

Is the muzzle threaded? Yes, 1/2-36 threads.

Buy the Stern Defense 16.1-Inch Barrel

Replace a worn barrel or finish your 9mm AR-15 build with a durable, Melonite-finished upgrade. Order it from our AR15 barrels selection at our Lubbock, Texas gun shop for fast, direct shipping.