SIG SAUER P320-XTEN 10mm with SIG-LOC PRO Optic

SIG SAUER P320-XTEN 10mm with SIG-LOC PRO Optic

The SIG SAUER P320-XTEN is a full-size 10mm Auto pistol designed around a 5-inch barrel and a 15-round magazine. Manufacturer part 320X5-10-BXR3-RXSL identifies this premium configuration with a factory-installed SIG-LOC PRO red-dot optic, XRAY3 day/night sights and two 15-round steel magazines. The exact UPC is 798681718542. This is not the lower-priced optic-ready XTEN supplied with only a cover plate.

Purpose-built 10mm configuration

The XTEN adapts the modular P320 system to the longer 10mm Auto cartridge. It uses a 5-inch carbon-steel barrel and a full-size stainless-steel slide with a black Nitron finish. SIG SAUER lists this exact SKU at 8.5 inches long, 1.3 inches wide and 5.9 inches high, with a weight of 33.7 ounces. The barrel is non-threaded.

Its full-size X-Series polymer grip is shaped for the larger 10mm magazine while maintaining the extended beavertail and high trigger-guard undercut associated with the X-Series layout. An M1913 accessory rail accommodates compatible equipment. Because this pistol differs dimensionally from 9mm P320 models, holsters, grip components and magazines should be confirmed specifically for the P320-XTEN rather than assumed interchangeable.

Factory-installed SIG-LOC PRO

SIG SAUER’s exact model table lists a SIG-LOC PRO electro-optic as installed, paired with XRAY3 day/night sights. The SIG-LOC mounting system uses a bottom-mounted interface intended to create five contact points between the optic and slide. The low mounting arrangement is designed to provide a strong connection while keeping the optic close to the slide.

Owners should use the supplied optic documentation for battery replacement, control operation, brightness selection and zeroing. If the optic is removed or replaced, confirm the new sight is compatible with the SIG-LOC PRO footprint and follow the manufacturer’s installation instructions. Choose a holster cut for the 5-inch XTEN slide and installed optic, with additional clearance for any rail-mounted accessory.

Trigger, sights and magazines

The pistol is striker fired and uses an X straight trigger. SIG SAUER lists no manual safety on this exact variant. XRAY3 day/night sights provide the factory mechanical sighting components in addition to the installed optic. A correctly fitted holster must completely cover the trigger, and the firearm should be stored securely when not in use.

The factory package contains two 15-round steel magazines. The 15-round capacity is specific to the full-size XTEN grip and distinguishes this model from 10-round restricted-capacity versions. Only magazines designed and verified for the P320-XTEN 10mm should be used. Magazine limits and transfer requirements vary, so confirm local eligibility before ordering.

Key specifications

• Manufacturer part number: 320X5-10-BXR3-RXSL.
• UPC: 798681718542.
• Caliber: 10mm Auto.
• Action: striker fired.
• Barrel: 5-inch carbon steel, non-threaded.
• Slide: black Nitron-finished stainless steel.
• Optic: factory-installed SIG-LOC PRO red dot.
• Sights: XRAY3 day/night sights.
• Grip: black full-size X-Series polymer grip.
• Trigger: X straight trigger.
• Magazines: two 15-round steel magazines.
• Rail: M1913 accessory rail.
• Manufacturer-listed dimensions: 8.5 inches long, 1.3 inches wide and 5.9 inches high; 33.7 ounces.

Selecting the correct XTEN model

P320-XTEN variants are available with different optics, manual-safety arrangements and magazine capacities. Use the complete manufacturer part number to confirm this factory-optic package. In particular, the RXSL suffix distinguishes it from models that are optic ready but do not include the SIG-LOC PRO sight.

This listing includes the P320-XTEN, installed optic, factory sights and two listed magazines. It does not include ammunition, a holster, rail-mounted equipment or other accessories unless separately stated. Review the P320 and optic manuals before use, select ammunition appropriate for the pistol and follow all applicable safe-handling, storage and transfer requirements.