Description
This is the P320-M18 CALIFORNIA, the California-legal version of the SIG Sauer M18. It’s built for shooters who need a reliable, modular handgun that meets California’s roster requirements. The key benefit? You get the same proven P320 platform with the M18’s compact slide and full-size grip, plus a manual safety and loaded chamber indicator. We’ve carried this since January 2026 and it’s become a regular reorder item — consistently popular with our customers. One staff note: ‘One of our most-reordered items — customers come back for a second one.’
Key Highlights
- California Roster Approved — Includes all required safety features: manual safety, loaded chamber indicator, and magazine disconnect.
- Modular Grip System — Swap the grip module in seconds to fit your hand size. Comes with a medium grip.
- 17+1 Capacity — Ships with two 10-round magazines to comply with California law.
- Optics Ready — Slide is cut for a Romeo1Pro or DeltaPoint Pro red dot. Covers included.
- Night Sights — SIGLITE front and rear night sights for low-light shooting.
Product Details
| Caliber | 9mm Luger |
| Action | Striker-fired |
| Barrel Length | 3.9 inches |
| Overall Length | 7.2 inches |
| Height | 5.5 inches |
| Width | 1.3 inches |
| Weight (measured) | 7.2 oz |
| Magazines Included | 2 x 10-round |
What Buyers Ask
Does this come with the manual safety?
Yes, the P320-M18 CALIFORNIA includes a frame-mounted manual safety as required for California compliance. It also has a loaded chamber indicator and magazine disconnect.
Can I use standard P320 magazines in this?
Yes, any standard P320 magazine will work. However, for California compliance, we only ship this with 10-round magazines. You can use higher-capacity magazines if you’re outside California.
Is this the same as the standard M18?
It’s mechanically identical to the standard M18 — same slide, barrel, and trigger. The differences are the manual safety, loaded chamber indicator, and 10-round magazines to meet California’s roster requirements.
✅ Ships same business day before 3 PM
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✅ Full refund within 30 days
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