It works well and has adjustable mag retention system.
Outstanding holster fits perfect
Semper fi
Arrived quickly and exactly as described.
Your Satisfaction, Our Priority: At Four Brothers Inc., customer satisfaction is at...
🔧 Don't forget Thread Locker — $1.50
Keep your holster hardware secure against vibration and loosening
✓ Added to your order!
$0.00 USD
FOUR BROTHERS HOLSTERS
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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.
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
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.
After setting retention, ride height, and cant, apply a removable thread locker to each screw to help prevent hardware loosening over time.
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.
Yes. The holster is cut to clear most popular slide-mounted red dots commonly used on factory SIG P365-series slides.
Yes. The mounting pattern provides multiple positions to fine-tune ride height and cant for your preferred carry and draw angle.
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
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

Great holster. Fit and finish are perfect.
It works well and has adjustable mag retention system.
Outstanding holster fits perfect
Semper fi
Arrived quickly and exactly as described.
Great job