The Faxon Firearms Duty Series 15A38P10NGPCL 300 Blackout 10.50" Black Chrome Mag Phosphate barrel delivers rugged performance for high-demand AR platform builds, combining a 10.50" button-rifled barrel with a precise 1:8 twist to stabilize a wide range of 300 Blackout projectiles. Finished in durable Chrome Mag Phosphate, this barrel is designed for reliable cycling, corrosion resistance, and straightforward maintenance in field or range environments, making it a solid choice for both suppressed and subsonic loads where consistency matters. Crafted by Faxon Firearms, it integrates seamlessly into compatible upper receivers to create a versatile rifle component capable of enhanced accuracy, robust heat management, and long-lasting field service. Whether youre equipping a compact platform for home defense, a hunt-ready AR variant, or a duty-ready rifle build, the 10.50" length balances maneuverability with effective velocity to support accurate, repeatable shots. The combination of the Duty Series pedigree, precise Button Rifling to optimize gas seal and bore wear, and the corrosion-resistant Chrome Mag Phosphate finish makes this barrel a reliable core for your 300 Blackout configuration, helping you achieve dependable performance in varied lighting, weather, and field conditions.