Lead & Steel Llc LS300-16 AR9 300Blackout Government Profile Black Nitride Chrome Moly Vanadium

The Lead & Steel LS300-16 is a drop-in AR9 300 Blackout barrel built for shooters who want a proven, no-fuss upgrade. Whether you're tuning a carbine for subsonic loads, competition, or hunting, this 16-inch government profile barrel gives you a solid foundation without the guesswork. The chrome moly vanadium steel construction and black nitride finish deliver corrosion resistance and durability in a package that's ready to install and shoot.

Government profile barrels are the standard on military and law enforcement rifles for good reason—they're robust, they cool evenly, and they hold their zero through extended shooting sessions. This barrel maintains that proven geometry while being tailored to the 300 Blackout cartridge, so you get the velocity and accuracy the round is known for without over-engineering the profile for your needs.

Lead & Steel built this barrel with accuracy in mind. The 300 Blackout thrives at moderate velocities, especially with subsonic ammunition, and a quality barrel is where that performance starts. Black nitride finishing protects against rust and fouling while keeping cleanup straightforward. If you're building or upgrading an AR9 platform, or swapping barrels to experiment with a new caliber, the LS300-16 gives you a no-compromise option that won't slow you down.

Key Features

• 16-inch barrel length optimized for 300 Blackout ballistics
• Government profile design proven on standard AR platforms
• Chrome moly vanadium steel construction for strength and longevity
• Black nitride finish resists corrosion and simplifies maintenance
• Drop-in compatible with standard AR9 uppers

Specifications

Frequently Asked Questions

Will this barrel work with my AR9 upper receiver?

Yes, the LS300-16 is designed as a drop-in barrel for standard AR9 platforms. It uses government profile dimensions, which are the industry standard for AR compatibility.

What's the advantage of black nitride finish on a 300 Blackout barrel?

Black nitride resists rust and corrosion, reduces fouling buildup during shooting, and makes cleaning easier. It also maintains a professional appearance and adds durability without adding significant weight.

Is this barrel suitable for subsonic ammunition?

The 300 Blackout is commonly loaded subsonic, and this 16-inch barrel will cycle subsonic loads effectively. A quality barrel is essential for consistent velocity and accuracy with any load, including subsonic rounds.

Do I need special tools to install this barrel?

We recommend consulting your AR platform's manual or a qualified gunsmith for barrel installation. Proper headspacing and alignment are critical for safe, accurate operation.