M18 3.9" 9mm Luger

The Sig Sauer M18 is the compact counterpart to the U.S. Military’s full-size sidearm and the official sidearm of the U.S. Marine Corps. As the commercial version of the Modular Handgun System M18, it delivers the same proven accuracy, reliability, and durability that America’s armed forces demand. This striker-fired 9mm pistol is built on the modular P320 platform, offering flexible configuration options for both defensive and duty use.

Finished in the military’s coyote-tan PVD coating, the stainless steel slide is optic-ready and directly compatible with the ROMEO-M17 red dot optic through a single-screw sight plate design. It comes equipped with SIGLITE night sights for low-light readiness, along with a removable rear sight plate to support red dot installation. The coyote-tan carry-length grip module mirrors military specifications and ensures secure handling in any environment.

Each M18 includes one 17-round and two 21-round steel magazines, providing mission-ready capacity straight from the box. With its Deltapoint Pro footprint, serialized M18 markings, and robust military design, the Sig Sauer M18 is a compact, battle-proven platform now available for civilian ownership—trusted by the armed forces, built for your everyday carry.

Specifications:

Caliber: 9mm Luger

Manufacturer's SKU: M18-9-CSS-MS (21rd), M18-9-CSS-MS-10 (10rd)

Capacity: 21+1, 10+1

Barrell Length: 3.9"

Finish: Coyote

Weight: 28.1 oz

Use: Personal Protection, Concealed Carry, Target