SIG SAUER P320 M.O.D. – 9mm, 3.9" Compensated, Optic Ready (320XF-9-MOD)

SIG built the P320 M.O.D. as the Official Sidearm of SIG SAUER's Off-Duty Program, and the configuration tells you what they were solving for: a 3.9" barrel inside a full-size slide, with the extra slide length occupied by a two-port slide-integrated expansion chamber. You get compensator performance without a can hanging off the muzzle, on a gun that still holds 21 rounds and carries. Add XRAY3 day/night sights, a PRO-footprint optic cut, a Springer Precision magazine catch, and a Hogue Wrapter grip in the box. SIG SKU 320XF-9-MOD, UPC 798681740246.

The Compensator Is Inside the Slide

A two-port slide-integrated expansion chamber vents gas upward through the slide rather than through a bolt-on comp. That means no added length past the muzzle, nothing to work loose, and nothing that changes your holster fit. The 3.9" barrel in an 8.3" overall package is not a typo — the slide is full-size and the difference is the expansion chamber doing its job.

Set Up the Way People Set These Up

• XSeries flat-blade trigger, striker fired.
• XRAY3 day/night sights — tritium that works in the dark, high-visibility front in daylight.
• Optic ready, PRO footprint — no optic installed, so you mount what you already run.
• Springer Precision magazine catch factory installed.
• Removable magwell and grip weight integrated into the X-Series grip module — tune the balance or take them off for carry.
• Hogue Heavy Grit Wrapter adhesive grip included in the packaging.
• Three 21-round magazines.
• Matte black DLC slide with engraving and enhanced serrations, on a full-length dust cover with an M1913 rail.

SIG P320 M.O.D. Specifications

Frequently Asked Questions

How is it compensated with no comp on the muzzle?
The compensator is built into the slide — a two-port expansion chamber that vents gas upward inside the full-size slide. Nothing protrudes past the muzzle and nothing can come loose.

Does an optic come with it?
No. The slide is optic ready with the PRO footprint, and no optic is installed.

Is there a manual safety version?
No. SIG states this model is not available with a manual safety.

Is there a lower-capacity version?
Yes — SIG offers 320XF-9-MOD-10 with three 10-round steel magazines for capacity-restricted states.

All firearm purchases must ship to a licensed FFL dealer. Manufacturer specifications are subject to change without notice.