Sig Sauer P365-FUSE & XC3 Sub Duty & Competition Holster

Sig Sauer P365-FUSE with Surefire XC3 Sub Light Duty & Competition Holster

Designed for competitive shooting and range training, this light-bearing OWB holster is precision molded for Sig Sauer P365-FUSE pistols equipped with the SureFire XC3 Sub weapon light. Constructed from durable .093" Kydex thermoplastic, the optics-ready design delivers adjustable retention and a fast, consistent draw for dependable performance on the range or during competition.

Compatible Firearm

• Sig Sauer P365-FUSE

Light-Bearing Retention

This holster uses a light-based retention system, locking securely onto the attached weapon light rather than the firearm frame. The SureFire XC3 Sub must be installed for proper holster fit and retention.

Compatible Weapon Light:

• SureFire XC3 Sub

Light Installation: This holster is designed and tested with the SureFire XC3 Sub installed using the (A) Rail Set with the #1 Key. This mounting hardware is included with the XC3 Sub by SureFire.

Retention is adjustable, allowing you to fine-tune the fit and draw to your preference.

See product information for the SureFire XC3 Sub.

Belt Attachment Options

Whether you're going with a classic like the Blade-Tech Duty Drop & Offset or building a modular setup around the True North Concepts MHA and Safariland QLS system, we offer trusted attachment options to configure your holster for your preferred setup.

Learn more about our Duty & Competition Belt Attachments to compare configurations and find the right fit for your setup.

Precision Fit & Construction

• Vacuum-formed using precision molds developed from CAD models of the firearm and weapon light.
• Each holster is trimmed, folded, assembled, and finished in-house.
• Retention and fit are tested using the actual firearm and weapon-light combination.
• Constructed from durable .093" Kydex thermoplastic for consistent fit and retention.

Features

• Full sweat guard for increased comfort and firearm protection
• Adjustable retention
  
• Low-profile design with smooth edges
• Profile cut to clear most popular red dot sights
• Open-ended design accommodates threaded barrels and many compensator setups
• Precision formed from durable .093" Kydex thermoplastic
• Available in right- and left-handed configurations
• Personalize your setup with a holster color or pattern that fits your style.
• Proudly made in the USA

Complete Your Carry Setup

Compatible Magazine Carriers:

• P365-FUSE IWB magazine carrier
• P365-FUSE OWB magazine carrier

See more Sig Sauer P365-FUSE & SureFire XC3 Sub Holsters:

Sig Sauer P365-FUSE & XC3 Sub IWB Holster
Sig Sauer P365-FUSE & XC3 Sub OWB Holster

Browse our complete Duty & Competition Holster Collection.

Care & Maintenance

For long-term reliability, apply a removable thread locker to all hardware after initial setup to help prevent loosening during regular use.

See our Apply Thread Locker to Your Holster video for a quick application guide.

If you choose the optional ModWing and later want to remove it, you'll need our Replacement Hardware kit, which includes (2) 3/8" screws, (2) 1/4" rubber spacers, and (2) 1/4" threaded posts.

Frequently Asked Questions

Will this holster work without the SureFire XC3 Sub installed?

No. This holster retains the weapon light rather than the firearm. The SureFire XC3 Sub must remain mounted to the pistol for proper retention.

How should the SureFire XC3 Sub be installed for proper holster fit?

This holster is designed and tested with the SureFire XC3 Sub installed using the (A) Rail Set with the #1 Key provided by SureFire.

Which Sig Sauer P365 pistol will fit this holster?

This holster is designed for the Sig Sauer P365-FUSE pistol equipped with the SureFire XC3 Sub weapon light.

Is this holster optics compatible?

Yes. The holster profile is cut to clear most popular red dot sights.

Can I use a threaded barrel or compensator?

Yes. The open muzzle design allows clearance for threaded barrels and many compensator setups.

Can I adjust the retention?

Yes. Adjustable retention allows you to customize the draw resistance for your preferred competition or range setup.

Is this holster available for left-handed shooters?

Yes. This holster is available in both right- and left-handed configurations. Select your preferred configuration when ordering.

Is this a Level 2 retention duty holster?

No. This holster uses adjustable passive retention and is not a Level 2 active-retention duty holster. It is designed primarily for competition, range training, and similar applications.

Where is this holster made?

Every Four Brothers Holster is proudly manufactured in the USA from premium .093" Kydex thermoplastic and individually inspected to ensure proper fit and function.

• Outside Waistband Holster specifically designed for USPSA, 3-Gun, Steel Challenge, and other competition shooting sports (May not be IDPA Legal)
• Holster purchase includes one belt attachment, based on your selected option
• Holster Retention is easily adjustable
• Molded with .093" thick thermoplastic for durability
• Profile cut to allow red dot sights
• Minimal material and smooth edges
• Proudly Made in the USA

• Duty Drop
• Duty Drop & Thigh Strap
• BOSS Hanger
• Modular Holster Adapter

Duty & Competition Holster Attachments Explained

Made in America. Founded, located, engineered, manufactured, and shipped from Northern Indiana.

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