The belt loop attachment is painful, it digs into me. I would not recommend this attachment.
Solid fit. Good, and adjustable, retention.
It got here quickly and was a perfect fit!
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
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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 A.C.E. 365 "XL" EVO Grip Module. Proper fit and retention depend on this exact configuration.
Icarus Precision A.C.E. 365 "XL" EVO Grip Module
This is a light-bearing Inside Waistband (IWB) holster designed for use with the following weapon lights:
Important: Retention is based on the weapon-mounted light. The holster will not retain the firearm without the light properly installed.
Important Fit Notes: This holster does not fit the P365 AXG, SXG, or Icarus Air Polymer grip modules. Retention is on the light, not the firearm, so the holster will not function without the light properly mounted. It is also not compatible with 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.
The compatible grip module can be found here: Icarus Precision A.C.E. 365 “XL” EVO Grip Module
For proper use, this holster requires one of the following lights using the #3 Key:
Preferred light options available from Four Brothers:
This custom inside waistband (IWB) holster is designed for the Sig Sauer P365, P365X, and P365XL when paired with the Icarus Precision A.C.E. 365 XL EVO grip module and the Streamlight TLR-7 HL-X weapon light. It provides secure retention and a precision fit for your concealed carry setup.
Each holster is vacuum-formed from a precision-machined CAD mold, trimmed, and finished in-house. Every unit is test-fitted with the actual pistol and light to ensure proper retention and draw. Retention is easily adjustable for your personal preference.
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.
Our Belt Attachment Blog Article explaining the different options can be found here:
4Bros Four Brothers Holsters Inside Waistband Attachments Explained
If you choose the optional ModWing and later want to remove it, you'll need our Replacement Hardware kit which includes (2) 3/8" screws, (2) 1/4" rubber spacers, and (2) 1/4" threaded posts.
Pair this holster with a matching magazine carrier for complete readiness:
*We recommend applying removable thread locker to all screws to prevent loosening during use.
• 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" thick 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

Finest holster from a great company who stands behind their product. Highly recommend.
Love the holster! Fit my 365 with an Icarus Precision frame perfectly. Shipped fast and looks amazing! Will definitely buy again.
This holster is awesome! Not many options for Icarus precision customizable side cars out there, had never heard of this company prior! Man am I impressed by the overall quality of this holster! Far more adjustable than anything else I’ve tried in this style(Tier1, Trex, LAS). I’m still adjusting to exactly how I like it about 2 weeks in. Only complaint I found is my optic (Swampfox Sentinel 2) did not fit and I did have to remove material around the optic to make it compatible. I know this isn’t a common optic so I wasn’t worried about it at all! Highly recommend you go buy this one
The belt loop attachment is painful, it digs into me. I would not recommend this attachment.
Solid fit. Good, and adjustable, retention.
It got here quickly and was a perfect fit!