SIG P320 M18 9MM 3.9″ NITE SGT – OR (3)10RD COYOTE CA COMPLIANT

Sig Sauer's P320 M18 in 9mm Luger is the commercial version of the U.S. military's adopted sidearm, here configured for California buyers with three 10-round magazines and a coyote brown frame and slide. TacticCAL carries this DOJ Roster listed variant for buyers who want a serious striker-fired platform without compromise.

Living with the M18: What the Platform Feels Like Over Time

The M18 is a compact-frame P320 built around a 3.9-inch barrel and a 28.1-ounce loaded feel that sits comfortably between a range-only gun and a carry-capable daily driver. The brown polymer grip and stainless steel frame give it a distinct look that holds up to regular handling. The ambidextrous manual safety works for both right- and left-handed shooters without retraining. Night sights with a removable rear plate mean you can run the gun as-delivered or mount a Romeo1Pro, DeltaPoint Pro, or Romeo-X Pro optic when you're ready. The serrated slide gives reliable purchase during press checks and reloads. Three 10-round magazines in the box means you're range-ready immediately. Mec-Gar or Safariland accessories pair naturally with this platform. See our DOJ Roster certified handguns catalog.

Frequently asked questions

The M18 ships with a removable night sight rear plate — which optics actually fit this slide?

The manufacturer specifies compatibility with the Romeo1Pro, DeltaPoint Pro, and Romeo-X Pro. The optic footprint is listed as Romeo 1. Verify fitment with your chosen optic before purchasing a mount.

Three 10-round magazines come in the box — is that enough for a typical range session, or should I plan to add more?

Three magazines covers basic drills, but most shooters add one or two more for sustained range work. ProMag and Mec-Gar make CA-compliant 10-round P320 magazines worth picking up before your first session.

What's the most useful way to spend the 10-day wait after completing my DROS at TacticCAL?

Source 9mm Luger ammunition, pick a Safariland or Galco holster sized for the compact P320 frame, and locate a CA-compliant locked transport container. If you're newer to the platform, scheduling a session with a local instructor is time well spent.

Where can I ship an online gun order near San Jose?

TacticCAL Gun Store in Sunnyvale receives online firearm orders for buyers throughout the South Bay, including San Jose, Santa Clara, and the surrounding Bay Area.

How much does an FFL transfer cost in Sunnyvale?

See our pricing and fees page at https://tacticcalgunstore.com/pricing-and-fees/ for current FFL transfer rates — TacticCAL keeps fees flat and transparent.

What do I need to bring for DROS in California?

Bring a valid California driver's license or ID card, proof of residency, your Firearm Safety Certificate (FSC), and payment for the firearm and transfer fees. Looking for FFL dealer Daly City? Here's our flat-rate process.

TacticCAL Gun Store Sunnyvale CA is your Bay Area FFL transfer dealer for California compliant handguns — same-day DROS Sunnyvale processing for Sunnyvale and South Bay buyers.