Sig Sauer CAL-X Kit P320-M18 9mm Carry Coyote Tan 10rd

The Sig Sauer CAL-X Kit converts a manual-safety 9mm P320 into the civilian M18 carry configuration and provides an optic-ready slide and carry-length grip module for everyday carry and duty applications. This kit centers on a full-size 3.9 in coyote-tan PVD coated stainless steel slide with SIG-LOC MHS footprint capable of accepting ROMEO-M17 optics (optic not included). It ships with a 3.9 in barrel and recoil spring assembly, SIGLITE front sight, removable night-sight rear plate, and three 10-round magazines.

Key Specifications

• The kit is for the model P320 M18.
• The caliber is 9mm Luger.
• The barrel measures 3.9 in (99.06 mm).
• The package includes (3) 10-round magazines.
• The slide is a full-size 3.9 in coyote-tan PVD coated stainless steel slide.
• The slide is optic-ready with a SIG-LOC MHS footprint compatible with ROMEO-M17 optics.
• The sights include a SIGLITE front night sight and a removable night-sight rear plate.
• The grip module is coyote tan and sized for carry.
• The kit retains a manual safety on the grip module.
• The kit includes a M1913 accessory rail and a recoil assembly.

This CAL-X kit delivers a factory-aligned conversion path to the commercial M18 carry setup, offering optic compatibility, carry-oriented ergonomics, and the hardware needed to outfit a manual-safety P320 for everyday carry or duty use. Its coyote-tan finish and modular components make it a practical option for shooters seeking the M18 footprint and carry-length handling without modifying an existing serialized frame.