Appendix Carry Sidecar Holster for Sig P365XL - Concealed Comfort

In this review the Radial Innovations appendix carry sidecar holster is examined for people who want a discreet, adjustable AIWB setup for the Sig Sauer P365XL and P365XL Spectre. The bottom line: this holster is best for owners of those P365XL variants who need a compact, concealment-focused rig that also carries a spare magazine; its single biggest advantage is the fully adjustable concealment claw and dual-clip mounting that let the shooter tune retention, ride height and cant for reliable concealment and comfort.

Key Features

• Exact Fitment: Molded precisely for the Sig Sauer P365XL and P365XL Spectre to ensure a secure, repeatable draw without excess movement.
• Adjustable Retention: You can dial in retention for both the pistol and spare magazine independently so the holster holds securely during daily activity.
• Concealment Claw: The fully adjustable claw pulls the grip tight to the body, minimizing printing for true appendix carry concealment.
• Spare Magazine Sidecar: A built-in ridge presses the spare magazine against the belt to reduce obvious printing and keep the mag accessible.
• Suppressor Height Sight & Optic Ready: No modification needed to accept suppressor-height sights or compatible optics, making it versatile for common setups.
• Durable Construction: Precision-molded 0.08 kydex and a lifetime repair or replacement warranty add long-term reliability.

Who It's For

This holster is aimed at Sig P365XL and P365XL Spectre owners who favor appendix inside-the-waistband carry and want a compact solution that includes a sidecar mag carrier. Shooters who value concealment and adjustable carry geometry will appreciate the concealment claw, dual pocket clips and the ability to tune retention.

Those who need compatibility with lasers or weapon-mounted lights should look elsewhere, because this model is not cut for any laser or light accessories. If you require ambidextrous or modular multi-gun fitment, a different holster platform would be more appropriate.

Pros & Cons

Pros

• Excellent concealment from the adjustable claw and magazine ridge that reduce printing.
• Adjustable retention, ride height and cant let users fine tune comfort and draw dynamics.
• Ready for suppressor-height sights and many optics without modification.
• Solid build quality with precision 0.08 kydex and a no BS lifetime warranty.

Cons

• Not compatible with lasers or weapon lights, limiting use for equipped pistols.
• Built specifically for P365XL variants, so it is not a universal fit for other models.

Specifications

Our Verdict

The Radial appendix sidecar holster is a strong choice for P365XL owners who prioritize concealment, adjustability and a built-in spare magazine carrier. It delivers dependable retention and a compact profile that justifies the price for those who need an AIWB setup, though buyers who run lasers or lights should select a different model.

Frequently Asked Questions

Will this holster accept a pistol with a laser or light?
No. This model is not cut to accept any laser or weapon-mounted light.

Is the holster compatible with optics?
Yes. It is ready for suppressor-height sights and compatible optics without additional modification.

Does it include adjustment for concealment and retention?
Yes. The holster has adjustable retention, ride height, cant and a concealment claw to fine tune how the pistol and spare magazine sit against the body.