Icarus Precision AIR Polymer P365-FUSE IWB Holster

Icarus Precision AIR Polymer P365-FUSE Grip Module IWB Holster

Note:  Icarus Precision supporting holsters are not returnable for anything other than quality or workmanship issues. They are specialty items for Icarus Precision Grip Modules used with factory slides, which impact fit and function of the holster. We do not guarantee fitment with aftermarket slides or other components.

Precision-fit Inside Waistband (IWB) holster designed for the Sig Sauer P365-XMACRO, P365XL, and P365-FUSE factory slides with the Icarus Precision AIR Polymer XMACRO Grip Module.

This Holster will ONLY work with the Icarus Precision AIR Polymer XMACRO Grip Module

Compatible with manual safety models. Not compatible with metal Icarus grip modules or Norsso slides.

This holster is designed to work with the factory slide. Any aftermarket slide design variations from the OEM slide dimensions will affect the holster fit and retention.

• Ambidexterous Thumb Ledge
• Right Hand Thumb Ledge
• Left Hand Thumb Ledge
• No Thumb Ledge

Compatibility

• Sig Sauer P365-XMACRO
• Sig Sauer P365XL
• Sig Sauer P365-FUSE
• Icarus Precision AIR Polymer XMACRO Grip Module
• Manual safety models
• Does NOT fit metal Icarus grip modules or Norsso slides

Product Highlights

• Precision Fit – Vacuum-formed using a CNC-machined mold from a CAD model of the actual firearm for a perfect match
• Red Dot Ready – Optic cut to clear slide-mounted red dot sights
• Suppressor Sight Compatible – Accommodates sights up to 0.400" (10mm) tall
• Adjustable Retention – Fine-tune the fit to your preferred draw tension
• Adjustable Cant & Ride Height – Personalize your carry angle and holster depth
• Modwing Option – Helps reduce printing and enhances concealment; includes two insert options
• Sweat Guard – Full sweat guard for improved comfort and firearm protection
• Open Muzzle Design – Compatible with threaded barrels and compensators
• Smooth, Rounded Edges – Designed for all-day comfort with minimal hot spots
• Phlster Enigma Compatible – 100% compatible with the Phlster OS Enigma system
• Made in the USA – Proudly manufactured in Logansport, Indiana

Maintenance Tip

To prevent hardware loss during daily use, we strongly recommend applying a removable thread locker to each screw once your holster is set up to your preference.

More Info:

Our Belt Attachment Blog Article explaining the different options can be found here:

4Bros Four Brothers Holsters Inside Waistband Attachments Explained

We have a kit available should you need to remove the modwing that includes  (2) 3/8" Screws, (2) 1/4" Rubber Spacers, and (2) 1/4" Threaded Posts which can be purchased HERE.

Complete Your Carry Setup

Complete your concealed carry setup with purpose-built accessories designed for comfort, concealment, and everyday use.

4Bros Holster Wedge — Designed to improve concealment and comfort by helping angle the firearm grip closer to the body while reducing pressure points during IWB carry.

Magazine pouches for these models can be found here:

P365-FUSE IWB Magazine Pouch

P365-FUSE OWB Magazine Pouch

All of our Icarus Precision Holsters can be found here:

Icarus Precision Holster Collection

Frequently Asked Questions

Will this holster fit the Icarus metal grip module?
No. This holster is specifically designed for the AIR Polymer XMACRO Grip Module and is not compatible with metal grip modules.

Does it work with the Norsso slide?
No. This holster is not compatible with Norsso aftermarket slides.

Can I use this holster with the Phlster Enigma system?
Yes, it is fully compatible with the Phlster OS Enigma using standard IWB mounting points.

What red dot optics will this holster accommodate?
The holster is cut to clear most popular red dots, including the Holosun 507K, Sig RomeoZero, and similar optics.

What should I do if I don’t see my specific configuration listed?
Contact us here — we’re happy to help if you’re unsure which holster is right for your setup.

• 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" 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
• 1 Series Gear Clips
• 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