Stern Defense 00645ACPBARREL105INCHD 45 ACP 10.50″ Black Melonite 4150 Chrome Molly Steel Barrel

Overview

The Stern Defense .45 ACP barrel is precision-machined to exacting tolerances, providing a solid, reliable foundation for custom, dedicated .45 ACP AR-15 upper receiver builds. Measuring 10.5 inches in length, this barrel is crafted from tough 4150 chrome-moly steel with a durable Melonite coating that enhances surface hardness and corrosion resistance. It features a 1:16 twist rate suitable for smaller projectiles, a .578-28 threaded muzzle for attaching suppressors or muzzle devices, and comes with the locating pin pre-installed for precise alignment during installation.

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