Ballistic Advantage Threaded Barrel w/ Spiral Fluting for SIG P365XL / XMacro | Copper | No LCI

Ballistic Advantage Threaded Barrel w/ Spiral Fluting for SIG P365XL / XMacro | Copper | No LCI

The Ballistic Advantage Threaded Barrel with Spiral Fluting for SIG P365XL and P365 XMacro combines an extended threaded muzzle with a high-visibility Copper PVD finish. Built for compatible longer-slide P365 configurations, this barrel provides a distinctive upgrade for users adding a suppressor, compensator, or other 1/2×28 muzzle device.

This model uses a No LCI configuration and does not have a loaded chamber indicator cut. It is intended for compatible SIG P365XL, P365 XMacro, and P365 XMacro TACOPS slide assemblies designed around a non-LCI barrel.

The spiral-fluted exterior creates a continuous machined pattern along the barrel and allows the Copper PVD finish to show prominently through compatible slide windows and relief cuts. Physical Vapor Deposition adds a hard, durable coating that helps protect the underlying stainless steel from corrosion and routine exterior wear.

Ballistic Advantage machines this Premium Series pistol barrel from hardened 416R stainless steel for strength, toughness, and dimensional stability. The 4.2-inch threaded overall length extends beyond the slide and provides 1/2×28 threads for widely available 9mm muzzle accessories.

Inside, the bore is honed, lapped, and tumbled to remove manufacturing imperfections and create a smooth finished surface. The chamber meets SAAMI specifications, while bore deviation is held to less than .0001 inch to promote reliable lockup, consistent cycling, and repeatable accuracy without a manufacturer-prescribed break-in period.

Features

• Designed for compatible SIG P365XL and P365 XMacro configurations
• No loaded chamber indicator cut
• Chambered in 9mm Luger
• Premium Series threaded pistol barrel
• Hardened 416R stainless steel construction
• Copper Physical Vapor Deposition finish
• Spiral-fluted exterior profile
• 4.2-inch threaded overall length
• 1/2×28 muzzle threads
• 1:10 right-hand twist rate
• Chamber manufactured to SAAMI specifications
• Honed, lapped, and tumbled bore
• Less than .0001-inch bore deviation
• No manufacturer-prescribed break-in period

Compatibility

• SIG P365XL with a compatible non-LCI slide assembly
• SIG P365 XMacro with a compatible non-LCI slide assembly
• SIG P365 XMacro TACOPS with a compatible non-LCI slide assembly
• Compatible aftermarket slides designed around the P365XL or XMacro barrel length
• Compatible 9mm suppressors, compensators, and muzzle devices using 1/2×28 threads
• Not intended for standard-length P365 or P365X slides
• Not intended for slide assemblies requiring an LCI barrel

Important Fitment Information

• This barrel does not include a loaded chamber indicator cut
• Confirm the slide is designed for a 4.2-inch threaded P365XL or XMacro barrel
• Verify that the slide and related components support a No LCI barrel
• Confirm suppressor, compensator, and muzzle-device compatibility before use
• Ballistic Advantage tests its barrels in complete factory firearms
• Aftermarket slide and component tolerances may affect fitment and performance
• Confirm proper barrel lockup and safe operation before live fire