Works perfectly with the new Viridian RFX1
snug secure fit and grab around the belt. Don't have to worry about pulling your magazine and the holder coming with you.
Mag Holder is lightweight, sturdy, tension adjustment easy to set. So far so good!
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!
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FOUR BROTHERS HOLSTERS
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This Inside Waistband (IWB) Kydex holster is designed for the Sig Sauer P365-FUSE equipped with the Streamlight TLR-7 HL-X weapon light using the 1913-3 key. It is also compatible with the Streamlight TLR-7 A and Streamlight TLR-7 X.
Retention is engineered on the mounted weapon light rather than the firearm, providing a secure and repeatable fit. Because retention is light-specific, this holster is designed to function only when a compatible Streamlight weapon light is attached.
Learn more about the compatible weapon lights:
Every Four Brothers Holster is vacuum formed using a precision-machined mold created from CAD models of the actual firearm and weapon light. Each holster is formed, trimmed, folded, and finished in-house before undergoing final fit and function testing with the actual firearm and light combination.
Adjustable retention allows you to fine-tune the draw to match your personal preference.
No. Retention is designed around the mounted Streamlight weapon light, so this holster requires a compatible light to function properly.
This holster fits the Streamlight TLR-7 HL-X using the 1913-3 key, Streamlight TLR-7 A, and Streamlight TLR-7 X.
Yes. The holster profile is cut to clear most red dot sights, including optics that overhang the side of the slide.
Yes. The open muzzle design provides clearance for most threaded barrels and compensators.
Yes. This holster is 100% compatible with the Phlster OS Enigma system.
*We recommend applying a removable thread locker to all holster screws after installation to help prevent screws from 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" 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

Second purchase from 4Bros. I have the XMacro holster, and am very satisfied. Finding the Fuse even more comfortable.
Really great quality holster!
I’ve been using the holster for a week and I am very happy with your product. Using in the appendix carry I am able to carry the pistol deep. I will be buying more kit from 4Bros.
Fits perfectly and is very comfortable
Just unboxed and test fit. All the screws were already tight and all components feel quality. The kydex is thick and sturdy. Would buy again and plan on buying other products from this company.
Works perfectly with the new Viridian RFX1
snug secure fit and grab around the belt. Don't have to worry about pulling your magazine and the holder coming with you.
Nice shade of black. Blends in with clothing, belt, mag itself.
Mag Holder is lightweight, sturdy, tension adjustment easy to set. So far so good!