IWB Kydex Holster for Sig P320 Full Size Black - Adjustable Carry

Our review of this IWB Kydex holster finds it best suited to Sig Sauer P320 Full Size owners who use a Streamlight TLR-1/1S/HL light and need a durable, adjustable inside-the-waistband carry option. The biggest reason to consider it is the purpose-built fit and rigid.08-in Kydex construction that locks the pistol and light into a consistent, repeatable position for fast access while remaining slim enough for everyday concealment. The holster is made in the USA and backed by a lifetime warranty, which adds confidence for regular carry users.

Key Features

• Purpose-built fit: Molded specifically for the Sig Sauer P320 Full Size with Streamlight TLR-1/1S/HL light to provide secure, repeatable retention and a clean draw path.
• Adjustable ride and cant: The clip can be moved and re-fastened to change height and angle so wearers can set appendix, strong side, behind-the-hip, or cross carry positions.
• Thick Kydex construction: The.08-in Kydex body resists water and rot and keeps its shape for consistent retention and long service life.
• Lightweight design: Built to reduce pressure when worn inside the waistband, improving comfort for extended daily carry with an un-tucked shirt.
• Easy maintenance: Waterproof and washable materials make cleaning simple without degrading performance over time.

Who It's For

This holster is ideal for owners of the Sig P320 Full Size who also run a Streamlight TLR-1/1S/HL light on the rail and want a rigid, form-fit IWB option that can be tuned for ride height and cant. Daily carriers who prioritize concealment under an untucked shirt and want a holster that will not absorb moisture will appreciate the Kydex construction.

It is less appropriate for shooters who need a universal or multi-model holster, those who prefer leather for break-in and passive retention, or users who do not run a weapon light, since the holster is formed specifically around the P320 Full Size with the TLR light attached.

Pros & Cons

Pros

• Secure, model-specific fit that improves draw consistency and concealment.
• Adjustable clip lets users set ride height and cant for personal carry style.
• Durable.08-in Kydex construction is waterproof and easy to clean.
• Made in the USA and backed by a lifetime warranty for long-term confidence.

Cons

• Retention feedback is mixed among users, so some may need to tweak tension for a preferred feel.
• Not compatible with other pistol models or without the specified Streamlight light attached.

Specifications

Compatible Model	Sig Sauer P320 Full Size 9MM/.40SW with Streamlight TLR-1/1S/HL
Carry Type	Inside Waistband (IWB)
Material	.08-in Kydex
Adjustability	Adjustable ride height, cant, and retention via clip and screws
Made	USA
Warranty	Lifetime Warranty

Our Verdict

The holster is a solid choice for P320 Full Size owners running a TLR-1/1S/HL light who want a durable, adjustable IWB option that balances concealability and quick access. Its tailored fit, robust Kydex, and lifetime warranty make it a good value for regular carry, though those seeking universal fit or leather construction should look elsewhere.

Frequently Asked Questions

Is this holster compatible without a Streamlight attached?
The holster is formed for the Sig P320 Full Size specifically with the Streamlight TLR-1/1S/HL attached, so it will not provide the intended fit without the light.

Can I change the cant or ride height?
Yes, the clip can be unscrewed and repositioned to adjust ride height and cant to suit appendix, strong side, behind-the-hip, or cross carry.

How durable is the material for daily carry?
The.08-in Kydex is rigid, waterproof, and washable, designed to retain shape and function for long-term daily carry.