Battle Arms Battlearms Lightweight 5.25" 9x19mm 4140 Barrel 1:10 Twist - BBL-5.25-9MM-BN

Upgrade your AR-15 or AR-9 platform with the Battle Arms Battlearms Lightweight 5.25″ 9x19mm 4140 Barrel. Engineered for dedicated pistol-caliber carbine builds, this compact barrel delivers reliable performance in a lightweight package ideal for close-quarters handling and maneuverability.

Key Features

• Lightweight Profile: Reduces overall firearm weight for faster target acquisition and reduced fatigue during extended use.
• 4140 Steel Construction: Provides exceptional strength and durability while maintaining a balance of weight and rigidity.
• Nitride/Melonite Finish: Offers superior corrosion resistance and a sleek black appearance that withstands harsh conditions.
• 1:10 Twist Rate: Optimized for stabilizing 9x19mm projectiles across a wide range of bullet weights for consistent accuracy.
• Blowback Gas System: Designed specifically for 9mm PCC applications, ensuring smooth cycling without the need for a traditional gas block.
• 1/2×36 Muzzle Threads: Allows easy attachment of suppressors, compensators, or other muzzle devices.

Specifications

• Barrel Length: 5.25 inches
• Overall Length: 7.25 inches
• Platform: AR-15 / AR-9 compatible
• Cartridge: 9x19mm / 9mm
• Twist Rate: 1:10
• Finish: Black Nitride
• Weight: 10.5 oz
• Improved feed ramp for reliable feeding

Why Choose This Product

This barrel addresses the needs of builders seeking a compact, reliable 9mm option for home defense, range training, or competition. The lightweight design minimizes muzzle rise and improves handling in tight spaces, while the nitride finish ensures long-term reliability without frequent maintenance. Whether you’re building a dedicated PCC or upgrading an existing setup, this component enhances both performance and user experience.

Invest in precision engineering from Battle Arms Development to complete your custom build with confidence.