- California versions
- 2
- Caliber
- 9mm
- Barrel length
- 3.6"
Is the Rost Martin RM1S legal in California?
Yes. 2 versions of the Rost Martin RM1S are on the California DOJ Roster of Handguns Certified for Sale as of October 27, 2026, so California dealers can sell those exact versions new. Only the specific versions listed on this page are certified: a different finish, barrel length or caliber that is not listed is off-roster and can only be bought through a private party transfer at a licensed dealer.
See all 2 California versions ↓ Shop the Rost Martin RM1S on Guns.com → Compare models →
Rost Martin RM1S versions on the California roster
| Photo | Version | Caliber | Barrel | Capacity | MSRP | Guns.com |
|---|---|---|---|---|---|---|
 |
RM1SBLKOSP10CA | 9mm | 3.6" | 10+1 | — | $478.99 · Buy → |
|
RM1SBLKOSP10CA (COMP) | 9mm | 3.6" | 10+1 | — | $478.99 · Buy → |
Tap a version for full specs, AB 1127 status and where to buy it in California. Guns.com ships to your local California FFL; prices change often, so confirm on Guns.com. Guns.com links are affiliate links that help support this site.
About the Rost Martin RM1S
Rost Martin is a newer American firearms manufacturer that entered the market with the RM1S, a striker-fired, polymer-framed semi-automatic pistol chambered in 9mm. It is designed as a full-size service-style handgun intended for personal defense, home defense, and duty use.
How the California versions differ
- Both versions are chambered in 9mm and share the same 3.6-inch barrel length.
- Both feature an optics-ready slide (indicated by "OSP" in the model name), meaning the slide is milled to accept a direct-mount red dot sight.
- Both are offered in a black finish, as indicated by "BLK" in the model designation.
- Both are 10-round capacity configurations, as required for California compliance (indicated by "10CA").
- The "(COMP)" variant designates a compensated version, meaning the barrel or muzzle area incorporates a compensator to help reduce muzzle rise during shooting, while the standard version does not include this feature.
Who it suits
The RM1S family is well suited to California shooters looking for a modern optics-ready pistol for home defense or concealed carry, with the compensated variant appealing to those who want additional muzzle control in a compact package.