The Lead & Steel LS556PEN-MID-13.9 5.56mm barrel is a lightweight pencil-profile AR-15 barrel designed for shooters who want a nimble rifle without sacrificing durability. Turned from 4150 chrome moly vanadium steel and finished in a QPQ black nitride coating, it offers a balance of corrosion resistance and long service life. The 13.90" length with threaded muzzle and M4 feed ramps provides reliable feeding and compatibility with a wide range of muzzle devices.

This mid-length 5.56x45mm NATO barrel is well suited for range use, training, and general-purpose carbine builds where handling and reliability matter. The 1:7" twist rate stabilizes a broad spectrum of bullet weights, making it versatile for different loads and shooting preferences. Backed by Lead & Steel’s focus on practical design and solid craftsmanship, this barrel is a straightforward choice for building or upgrading an AR-15.

Key Features:

• Manufacturer: Lead & Steel
• Model: LS556PEN-MID-13.9
• Caliber: 5.56x45mm NATO
• Barrel Length: 13.90"
• Barrel Description: Pencil Profile
• Barrel Type: Mid-Length Gas System
• Twist: 1:7"
• Thread Pattern: 1/2"x28
• Barrel Features: M4 Feed Ramps
• Finish: QPQ Black Nitride
• Material: 4150 Chrome Moly Vanadium Steel