Quality product! Outstanding customer service just received Mine 2 days ago would highly recommend
I carry at 3 o'clock and it doesnt work well at that position. However, for appendix carry it does give better concealment.
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🔧 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. “X” MACRO, FUSE MACRO or FUSE EVO grip module. Proper fit and retention depend on this exact configuration.
Icarus Precision Grip Module Compatibility:
This holster fits the "X" MACRO, and FUSE versions of the Icarus Precision Grip Module. You can view these grip modules directly through Icarus Precision:
Icarus Precision A.C.E. 365 “X” MACRO
Icarus Precision A.C.E. 365 "FUSE" EVO
Icarus Precision A.C.E. 365 "FUSE" MACRO
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.
Carry with confidence using our premium inside waistband (IWB) holster, precision-fit for the Sig Sauer P365-FUSE equipped with the Icarus Precision A.C.E. “X” MACRO, "FUSE" MACRO or "FUSE" EVO grip module and a Streamlight TLR-7A or TLR-7X weapon-mounted light.
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.
Each holster is handcrafted, trimmed, and tested in-house with actual pistols and lights for consistent retention and accuracy.
Pro Tip: Apply a removable thread locker to each screw after setup to prevent hardware loosening during carry.
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.
• 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" 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

Quality product! Outstanding customer service just received Mine 2 days ago would highly recommend
I carry at 3 o'clock and it doesnt work well at that position. However, for appendix carry it does give better concealment.
Its incredibly comfortable
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