Sig Sauer P365-FUSE & Icarus Precision A.C.E. Module & TLR-7 X/A IWB Holster

Carry with confidence using our premium Inside Waistband (IWB) holster, precision-fit for the Sig Sauer P365-FUSE equipped with the Icarus Precision A.C.E. 365 “X” MACRO or "FUSE" EVO grip module, and the Streamlight TLR-7A or TLR-7X weapon-mounted light.

This holster requires the light for retention — it locks directly onto the TLR-7A or TLR-7X using the #3 key. It will not retain the pistol without the light mounted properly.

Our preferred light option for this holster is the Streamlight TLR-7 X USB, which can be purchased from us HERE

Note: This holster is not compatible with Icarus Air Polymer grip modules and has not been tested with Norsso Slides.

Key Features

• Precision fit – CAD-modeled and vacuum-formed using actual P365-FUSE and TLR-7A/X components for unmatched accuracy.
• Light-based retention – Secures onto the light body, not the pistol itself.
• Fully adjustable – Fine-tune ride height, cant, and retention to suit your carry style.
• Open muzzle – Allows for threaded barrels and compensators.
• Suppressor sight channel – Supports taller sights with ease.
• Modwing included – Comes with two insert options to reduce printing and improve concealment.
• Red dot compatible – Clears most optics, including those that overhang the slide.
• Comfort-forward design – Rounded edges and smoothed surfaces minimize hot spots and improve daily comfort.
• Phlster Enigma OS compatible – 100% Enigma-ready.
• Made in the USA – Built in-house using durable .080” thermoplastic.

Additional Details

Every holster is handcrafted, trimmed, and tested in-house with actual pistols and lights to ensure a perfect fit and consistent retention.

We strongly recommend applying a removable thread locker to each screw after setup to prevent hardware loosening during carry.

Matching Accessories

P365 X-MACRO IWB Magazine Pouch

P365 X-MACRO OWB Magazine Pouch

All Icarus Precision Holsters →

Helpful Resources

Streamlight TLR-7X Data Sheet

Icarus Precision Grip Modules

Icarus Precision XMACRO Holster Version

4Bros Inside Waistband Attachment Guide

• Full Sweat Guard
• Adjustable Retention
• Adjustable Cant
• Profile cut to allow red dot sights
• Open Muzzle for threaded barrels and compensators
• Minimal material and smooth edges
• Made from .080" black thermoplastic for durability.
• Optional Modwing includes 2 inserts to allow the user to adjust the amount of leverage placed against the inside of the belt to reduce firearm printing
• Proudly Made in the USA

• Monoblock
• Ultituck
• Soft Loops 
• RCS Overhooks
• Ulticlip

IWB Belt Attachments Explained

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

Please review our Four Brothers Holsters Exchange, Return and Refund Policy

Please review our Four Brothers Holsters Terms of Service