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Rost Martin is a Dallas, Texas-based company that entered the market in 2024 with their RM1C compact and immediately earned strong reviews. The RM1S is their follow-up sub-compact, and it carries all the same DNA in a more concealable package. At 6.72 inches long, 4.4 inches tall with the flush magazine, 1.1 inches wide, and just under 20 ounces loaded, it sits in traditional sub-compact territory, comparable in footprint to the Glock 26 or S&W M&P9 Sub-Compact, but with a feature set that most guns in that class don't offer at anywhere near this price point.
The 3.6-inch hammer-forged, match-grade barrel with a recessed crown is one of the first things worth noting. That barrel length actually gives the RM1S a slight edge over many micro-compacts on sight radius and velocity without meaningfully sacrificing concealability. The Tenifer-treated nitrocarburized steel slide is corrosion-resistant and built for real-world carry conditions. On top, you get front and rear slide serrations, anti-glare top serrations, and an optics cut that ships with a Trijicon RMR-compatible mounting plate. Additional plates for other popular red dot footprints are sold separately on Rost Martin's website.
Rost Martin didn't just shrink the RM1C and call it a day. They went back and increased both the aggressiveness and surface area of the grip texture specifically because smaller guns demand a more secure hold. The result is their Responsive Grip Texture, a proprietary laser-stippled pattern that grips back as you apply pressure. Textured index points on both sides of the frame give you a natural way to index your support hand and help manage recoil, while the undercut trigger guard and beavertail extension let you ride the gun high in your hand. Modular backstraps are included so the fit can be dialed in for different hand sizes, which is a feature you don't often see at this price. The flat-face trigger breaks cleanly with a short reset and a pull weight just under five pounds.
Controls are fully ambidextrous, including both the slide stop and the magazine release, with no reversal required for left-handed use. The funneled magazine well makes reloads faster under pressure. A two-slot Picatinny rail on the dust cover accepts standard weapon lights. The RM1S ships with both a 12-round flush-fit magazine and a 15-round extended magazine, the latter adding a half-inch to the grip and offering a full-hand purchase for those with larger hands.
No, the RM1S ships optic-ready but does not include a red dot sight. It does come with an RMR-compatible mounting plate already in the box, so you can drop in a Trijicon RMR or similarly-footprinted optic without buying additional hardware. Mounting plates for other popular red dot footprints are available separately on Rost Martin's website.
The RM1S has a profile similar to the Glock 26 and S&W M&P9 Sub-Compact, so holsters designed for those guns often work well. Some reviewers have also noted that holsters cut for the RM1C compact fit the RM1S, which can actually be an advantage for inside-the-waistband carry since the extra length helps anchor the holster. Rost Martin-specific holster options are also available through the aftermarket.
The 15-round magazine extends below the grip of the RM1S and comes with a grip sleeve that wraps around the exposed portion of the magazine body. This sleeve adds comfort and prevents the magazine from being inserted too far, which can damage the pistol or the magazine. The sleeve on the RM1S has been noted to fit with the right tension and does not slide freely on the magazine body.
Yes. Rost Martin is based in Dallas, Texas, and all parts are made in the United States. The company was founded by Chris and Stefany Toomer, both of whom bring significant firearms industry background to the brand.
The RM1S comes standard with a white-dot front sight and a black serrated U-notch rear sight. Both sights are dovetail-mounted and are compatible with Springfield Armory XD and XDM aftermarket sights, so there's a wide selection of upgrade options available if you want higher-visibility or night sights.
For a sub-compact 9mm, the RM1S has earned a reputation as a noticeably soft shooter. The combination of Rost Martin's aggressive Responsive Grip Texture, the textured index points on the frame, the extended beavertail, and the undercut trigger guard all work together to give you a higher, more secure grip that makes a real difference in recoil management. Reviewers coming from micro-compact pistols have consistently noted that the RM1S is more comfortable to shoot for extended range sessions.
| UPC | 850067485032 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RM1SBLKOSP |
| Action | |
| Barrel Length | 3.6" |
| Caliber/Gauge | 9mm |
| Capacity | 15 + 1 |
| Shipping Weight | 3.115 |
| Slide Description | Optic Ready/Serrated |
| Color | Black |
| Model | |
| Product Type | Striker Fired |
| Sights | Iron Sights |
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