this is my 5th holster from 4bros great quality and looks good
Second purchase from 4Bros. I have the XMacro holster, and am very satisfied. Finding the Fuse even more comfortable.
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FOUR BROTHERS HOLSTERS
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This holster is specifically designed for use with the Icarus Precision A.C.E. “X” MACRO, and "XL" EVO grip module. Proper fit and retention depend on this exact configuration.
Explore these modules directly from Icarus Precision:
Not compatible with P365 AXG or SXG grip modules, Norsso slides, or the Icarus Air Polymer grip modules. Supports all compatible manual safety variants.
Not compatible with P365 AXG or SXG grip modules, Norsso slides, or any Icarus Air Polymer grip modules. This holster does support manual safety models.
Each holster is vacuum-formed on precision-machined molds developed from CAD models of the actual firearm. After forming, every unit is trimmed, folded, and finished in-house to ensure consistency and smooth edges.
Final fit and retention testing is performed using the real firearm to confirm proper lockup and reliable draw. Retention can be easily tuned to your personal preference.
The holster is designed to fit the XL and MACRO versions of the Icarus Precision Grip Module. Explore these modules directly from Icarus Precision:
This inside waistband holster is engineered for the Sig Sauer P365-XMACRO, P365XL, and P365 slide when paired with the Icarus Precision A.C.E. 365 "X" MACRO and A.C.E. 365 "XL" EVO Grip Modules. It provides a secure, comfortable concealed carry solution tailored to these upgraded grip systems.
Learn how each belt attachment works in our detailed guide: Inside Waistband Belt & No-Belt Attachment Options Explained
Magazine carriers for these models:
Explore all compatible holsters in our Icarus Precision Holster Collection.
Need help selecting a color? View our Holster Color Guide.
*We recommend applying a removable thread locker to all screws upon receipt to prevent hardware loss during use.
No. This holster does not fit AXG or SXG grip modules.
Yes, all compatible P365 models with manual safety are supported.
No. The holster is designed only for the aluminum A.C.E. and A.C.E. EVO modules.
No, Norsso slide profiles are not supported.
Yes. The holster is cut to clear most popular red dot sights.
Yes. The open-muzzle design accommodates extended barrels and compensators.
See our full explanation of belt and no-belt options here: IWB Belt 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 .093" 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
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

Perfect thank you
Well built, secure. Fits my icarus P365xl perfectly.
Like the holster, like the retention, and the adjustment. Only thing I would have liked is more protection coming up on body side
I have purchased a few recommended holsters for my setup P365X with Icarus Precision ACE grip module, and this holster is by far the best. The way it sits on the waste line, the way it conceals, it simply great. The others although they look similar, do not wear the same. Buy this one, you will not regret it.
Fits like a glove. P365x with ace evo grip.
this is my 5th holster from 4bros great quality and looks good
this is my 5th holster from 4bros great quality and looks good
Second purchase from 4Bros. I have the XMacro holster, and am very satisfied. Finding the Fuse even more comfortable.