The Gbrs Group x Priority 1 IWB holster for SIG P320 with SureFire X300U is built for shooters who demand a concealed carry rig that handles modern kit without compromise. This right-hand inside-the-waistband holster marries precision engineering with practical carry features—optics-ready, light-compatible, and trimmed to work with threaded barrels. If you're running a P320 with a mounted optic and a weapon light, this holster is designed to accommodate both while keeping your grip secure and your profile low.

Gbrs Group precision-forms the holster from 0.080-inch Boltaron, a proven thermoplastic that resists sweat and wear while staying lightweight. Every unit is CNC-trimmed, hand-finished, individually test-fit, and inspected—no shortcuts. The design philosophy is straightforward: retention you can adjust, carry angles you can dial in, and features that actually reduce printing. That includes a full sweat guard to keep the rear sight off your body, a concealment wing to rotate the grip inboard, and a Discreet Carry monoblock belt clip that works with or without a belt.

Cant is adjustable to 0 or 15 degrees, and ride height adjusts when you swap between tuckable and standard attachments. The open muzzle accepts threaded barrels and most compensators. An optics channel is molded and trimmed to fit common slide-mounted red dots. This isn't a universal holster—it's purpose-built for the P320 and the X300U light, which means fit is tight and function is predictable. If you're carrying a modern duty or competition gun with modern accessories, this holster speaks your language.

Key Features

• Adjustable retention (screw-on system) to match your preference
• Molded and trimmed optics channel for slide-mounted red dots
• Full sweat guard protects your body from rear sight
• Concealment wing minimizes printing and aids stability
• Discreet Carry monoblock clip functions with or without a belt
• Adjustable cant (0° or 15°) and ride height
• Open muzzle design accepts threaded barrels and compensators
• Precision CNC-trimmed and hand-finished Boltaron construction
• Accommodates tall suppressor-height sights

Specifications

Brand	Gbrs Group
Holster Type	Inside the Waistband (IWB)
Hand Orientation	Right-Hand
Firearm Compatibility	SIG P320 (Compact, Carry, XCarry, Full Size, X5 Legion, M17/M18)
Light Compatibility	SureFire X300U-A / X300U-B
Material	0.080-inch Boltaron
Cant Options	0° or 15°
Color	Black
Finish	Hand-finished, CNC-trimmed

Frequently Asked Questions

Will this holster fit my P320 with an optics-mounted red dot?

Yes. The holster includes a molded and CNC-trimmed optics channel designed to accommodate most common slide-mounted optics, including RMR-style footprint dots. The design is purpose-built for modern P320 setups.

Can I carry this holster without a belt?

Yes. The Discreet Carry monoblock belt clip is engineered to hold the holster securely inside the waistband with or without a belt, though a belt will always provide additional stability.

What P320 models are compatible with this holster?

This holster is designed for SIG P320 models in 9mm and .40 caliber, including the Compact, Carry, XCarry, Full Size, X5 Legion, M17, and M18 when paired with the SureFire X300U-A or X300U-B light.

Does this holster work with threaded barrels and compensators?

Yes. The open-ended muzzle design allows the holster to accept threaded barrels and most compensators without interference.