The JE Machine PS-BAL24 AR-15 Barrel 8.5" 9mm is a compact, purpose-built barrel for AR-pattern 9mm builds. Crafted from 4150 chrome moly steel and finished in black nitride, it offers a durable, corrosion-resistant surface designed for long service life. Its medium profile and 8.5-inch length strike a balance between rigidity and manageable weight, making it well suited to pistol-caliber carbines and AR pistols. The barrel features a 1:10 twist rate clearly marked on the steel and a threaded muzzle with a 1/2x36 pattern for compatible 9mm muzzle devices.

This barrel is ideal for shooters building a compact AR-15 in 9mm for range use, training, or recreational shooting where maneuverability and smooth handling matter. The 1:10 twist rate is optimized for common 9mm loads, supporting consistent accuracy with a variety of bullet weights. With its straightforward installation on standard AR-15 platforms and proven materials, the PS-BAL24 provides a reliable foundation for a custom pistol-caliber build backed by JE Machine Tech’s reputation for practical, well-made components.

Key Features:

• Manufacturer: JE Machine Tech
• Model: PS-BAL24
• Caliber: 9mm
• Barrel Length: 8.5"
• Barrel Material: 4150 Chrome Moly Steel
• Barrel Profile: Medium
• Twist Rate: 1:10
• Thread Pattern: 1/2x36
• Finish: Black Nitride