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

In this review the holster is judged as a purpose-built inside-waistband option for shooters who carry a Sig Sauer P320 Full Size 9MM/.40SW with a manual safety and a Streamlight TLR-1/1S/HL light. The bottom line: it is a comfortable, adjustable Kydex IWB that prioritizes concealment and fast access while resisting the wear of daily use. The reviewer found it best for users who want a rigid, low-profile holster that can be tuned for ride height, cant and retention without sacrificing concealability under an un-tucked shirt.

Key Features

• Formed for Sig P320 Full Size: Precisely molded to fit the P320 Full Size 9MM/.40SW with manual safety and Streamlight TLR-1/1S/HL light for a secure, consistent fit.
• Adjustable ride, cant and retention: The clip and screw system allows quick repositioning for appendix, strong side, behind the hip or cross carry to tune draw angle and concealment.
• .08-inch Kydex construction: Thick, waterproof Kydex provides lifetime structural integrity and is washable so it will not rot like softer materials.
• Designed for IWB concealment: Built to be worn inside the waistband with a belt and an un-tucked shirt for discreet everyday carry without excess printing.
• Lightweight and comfortable hardware: Low bulk and lightweight construction reduce pressure when seated while maintaining a positive retention feel.
• Made in the USA with lifetime warranty: Domestic manufacture and a lifetime warranty give long-term confidence in durability and support.

Who It's For

This holster is aimed at concealed carriers who own a Sig Sauer P320 Full Size configured with the manual safety and a Streamlight TLR-1/1S/HL light and who need a low-profile IWB solution that can be tuned for appendix, strong side, behind the hip or cross carry. It suits people who favor a rigid Kydex platform that stays consistent draw after draw and who want something washable and weather resistant.

People who should look elsewhere include those who require a holster for a different pistol configuration, those who prefer outside-the-waistband rigs or leather for comfort over long all-day wear, and users who need micro-adjustable passive retention systems beyond simple screw tensioners.

Pros & Cons

Pros

• Secure, form-fitting retention for the P320 Full Size with Streamlight TLR-series lights and manual safety.
• Adjustable clip placement and tension allow personalized ride height and cant for faster, repeatable draws.
• Durable.08-in Kydex construction is waterproof, washable and resistant to wear over time.
• Comfort-focused, lightweight profile makes IWB carry less intrusive under an un-tucked shirt.

Cons

• Retention reports are mixed among users, so some may want to adjust tension frequently to achieve a preferred feel.
• Not ideal for users who prefer leather or soft-sided holsters for long periods of seated comfort.

Specifications

Compatibility	Sig Sauer P320 Full Size 9MM/.40SW with manual safety and Streamlight TLR-1/1S/HL light
Carry Type	Inside Waistband (IWB)
Material	.08-in Kydex (waterproof, washable)
Adjustability	Ride height, cant and retention via clip and screws
Made	United States
Warranty	Lifetime Warranty

Our Verdict

The IWB Kydex holster for the Sig P320 Full Size with manual safety and Streamlight TLR-series light is a pragmatic choice for carriers who want a durable, adjustable inside-waistband option that conceals well and supports quick access. Its robust.08-in Kydex, simple adjustment system and comfortable profile make it good value for anyone who carries daily and prioritizes reliability over softer materials.

Frequently Asked Questions

Will this fit my Sig P320 Full Size with a Streamlight TLR-1?
Yes. It is specifically formed to accept the Full Size P320 with a manual safety and Streamlight TLR-1/1S/HL style lights.

Can I change the carry cant and height?
Yes. The clip and screw system allows you to reposition the clip for different ride heights and cant angles quickly.

Is the holster washable and weather resistant?
Yes. Constructed from.08-in Kydex, it is waterproof, washable and will not rot like leather.