Icarus Precision ACE 365 311 XL/Macro OWB Holster

Icarus Precision ACE 365 311 MACRO/XL Grip Module OWB 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.

Grip Module Compatibility (Start Here)

This holster is specifically designed for use with the Icarus Precision ACE 365 311 Grip Module. Proper fit and retention depend on this exact configuration.

Icarus Precision ACE 365 311 Grip Module

• Only compatible with Icarus A.C.E. 365 311 grip module
• Not compatible with other Icarus A.C.E. 365 311 FUSE grip modules
• Not compatible with Icarus A.C.E. 365 "X" MACRO, Fuse or EVO grip modules.
• Not compatible with AXG or SXG grip modules
• Not compatible with Icarus Air Polymer grip modules

This Outside Waistband (OWB) holster is purpose-built for the Icarus Precision ACE 365 311 grip module with the factory SIG P365-MACRO or P365XL slide. It provides a secure, consistent draw and stable belt-mounted carry for training, range, and everyday use.

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.

Get specifications for the compatible grip module on the Icarus Precision ACE 365 311 product page.

Fit & Compatibility

• Designed for the Icarus Precision ACE 365 311 grip module.
• Fits the SIG Sauer P365-MACRO or P365XL (factory slide).
• Supports right- and left-hand Thumb Ledge Style variants of the 311 grip module.
• Not compatible with other Icarus metal or AIR Polymer grip modules.

Product Highlights

• Precision-molded fit – Formed on a CNC-machined mold from a CAD model of the firearm to deliver repeatable retention.
• Handedness – Available in right- and left-handed configurations
• Red-dot compatible – Cut to clear most slide-mounted micro optics used on P365 platforms.
• Suppressor-sight ready – Sight channel accommodates heights up to 0.400" (10 mm).
• Adjustable retention – Fine-tune draw tension for your preferred setup.
• Adjustable ride height & cant – Dial in belt-line position and angle for comfort and draw efficiency.
• Open muzzle design – Compatible with threaded barrels and compensators.
• Full sweat guard – Helps shield the slide from body contact and adds comfort during carry.
• Made in the USA – Designed and manufactured in Logansport, Indiana.

Setup & Maintenance

After setting retention, ride height, and cant, apply a removable thread locker to each screw to help prevent hardware loosening over time.

Belt Attachments & Resources

• Outside-the-Waistband belt attachment options explained  Please note: Our 4BROS Belt Slides are designed to work with standard belts for everyday carry, not thicker "Battle Belt" style belts with rows of MOLLE on the outside. 
• Holster color and pattern guide
• Icarus Precision holster collection

Magazine Carriers

• P365 X-MACRO IWB Magazine Pouch
• P365 X-MACRO OWB Magazine Pouch

Frequently Asked Questions

Will this fit other Icarus grip modules?

No. This model is specifically built for the Icarus Precision ACE 365 311 grip module and is not compatible with other Icarus metal or AIR Polymer grip modules.

Is this OWB holster red-dot compatible?

Yes. The holster is cut to clear most popular slide-mounted red dots commonly used on factory SIG P365-series slides.

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.

Can I adjust ride height or cant?

Yes. The mounting pattern provides multiple positions to fine-tune ride height and cant for your preferred carry and draw angle.

What if I don’t see my exact setup listed?

Contact our team and we’ll help verify fit for your configuration.

• Full Sweat Guard
• Adjustable Retention
• Profile cut to allow red dot sights
• Open Muzzle for threaded barrels and compensators
• Minimal material and smooth edges
• Proudly Made in the USA

• 4BROS Belt Slide
• Tek-Lok
• Sting Ray Belt Slide
• QLS Fork
• No Belt Attachment

OWB 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