The Sig Sauer M18 Commemorative Series pistol in 9mm with a coyote tan finish and 21+1 capacity (brand part no. M189CSSMS) brings the U.S. military’s issued M18 sidearm design to civilian shooters with a high-capacity magazine option. Sig Sauer fits the pistol with a 3.9-inch black DLC-finished barrel and an optic-ready, serrated slide milled to the Romeo-M17 footprint. Two 21-round magazines ship with the pistol, and night sights support low-light target acquisition. A manual safety rounds out the military-inspired feature set. Among military-pattern semi-auto handguns, this M18 Commemorative configuration favors shooters who want the issued sidearm platform with extended capacity.

Key Specifications

• The chambering is 9mm.
• The capacity is 21+1 rounds.
• The barrel measures 3.9 inches, finished in black DLC.
• The slide is optic ready and serrated, milled to the Romeo-M17 footprint.
• The sights are night sights, supporting low-light target acquisition.
• The safety system is a manual safety.
• Two 21-round magazines are included with the pistol.
• The trigger mechanism is Striker Fired.
• Shipping weight of approximately 3.7 pounds.

Frequently Asked Questions

Is this pistol optic ready? Yes, the slide is milled to the Romeo-M17 footprint for red dot mounting.

How many rounds does each magazine hold? 21 rounds, for 22 total with a round chambered.

Buy the Sig Sauer M18 Commemorative Pistol

The issued military sidearm platform with extended 21-round capacity is exactly what this M18 Commemorative delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.