ROST MARTIN RM1S 9mm 3.6-inch Optic-Ready Black (2) 10-rd
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Expert review
About this product
What is the ROST MARTIN RM1S 9mm 3.6-inch Optic-Ready Black? The RM1S is a compact semi-automatic pistol chambered in 9mm Luger with a 3.6-inch barrel and optics-ready slide that ships with two 10-round magazines. This handgun is designed for concealed carry applications where minimal printing and quick optic deployment are priorities. Its RMR-pattern mounting system provides immediate compatibility with the most popular micro red dot sights on the market.
What is the ROST MARTIN RM1S used for?
The RM1S is primarily designed for everyday concealed carry and defensive use. With its 3.6-inch barrel and compact frame, it conceals easily in appendix or strong-side holsters while maintaining sufficient sight radius for practical accuracy. The optic-ready configuration makes it particularly suitable for shooters transitioning from iron sights to red dot systems without requiring slide milling.
How does the ROST MARTIN RM1S compare to the Sig Sauer P365?
The RM1S offers superior optic readiness out of the box compared to the Sig Sauer P365, which requires separate purchase of an optics-ready slide or milling service. However, the P365 maintains a slight advantage in aftermarket support with more holster options and magazine availability. The RM1S ships with two magazines versus the P365's single magazine at a similar price point.
What does it weigh and what are the dimensions?
The RM1S weighs 22.4 ounces unloaded and measures 6.3 inches in length with a height of 4.7 inches. The slide width is 0.98 inches, making it comparable to most subcompact 9mm pistols in its class. These dimensions allow for comfortable all-day carry while maintaining enough grip surface for a solid shooting platform.
Who is this NOT for?
The RM1S is not suitable for competition shooting or high-round-count training sessions due to its limited magazine capacity and compact size. Shooters with larger hands may find the grip uncomfortable during extended range sessions. Those requiring higher capacity should consider full-size options like our Stevens 334 rifle for more substantial firepower.
What's in the box?
The package includes the RM1S pistol, two 10-round magazines, an installed RMR-pattern optic plate, and a cable lock. Unlike some competitors, it does not include additional sight plates or a hard case, which keeps the initial cost down but may require additional purchases for certain optics. The total unboxing weight is 2.8 pounds including all packaging materials.
Is the ROST MARTIN RM1S worth it at $439?
At $439, the RM1S represents solid value for an optics-ready carry pistol with two magazines included. Compared to similar offerings from established brands that often start around $500 without optics compatibility, it provides immediate red dot mounting capability at a competitive price point. For shooters wanting to enter the optics game without breaking the bank, this is one of the better entry points available.
Specs at a glance
Pros & cons
What works
- Optics-ready out of the box - saves $150-200 vs aftermarket milling
- Weighs 22.4 oz unloaded - 2.1 oz lighter than Sig P365 XL
- Includes two 10-rd magazines - most competitors ship with one
- 3.6-inch barrel provides 1250 fps with standard 115gr ammo
Trade-offs
- Limited aftermarket support - only 3 holster manufacturers currently make RM1S-specific models
- No additional optic plates included - RMR pattern only, other footprints require separate $45 plates
- 10-rd magazine capacity - lower than many modern micro-compacts offering 12-15 rounds
- Basic packaging - no hard case or additional accessories included
Key attributes
| upc | 850067485049 |
| manufacturer | Rost Martin |
| manufacturer part number | RM1SBLKOSP10 |
Frequently asked questions
- Is it compatible with Holosun 507C?
- Yes, the RM1S uses an RMR-pattern cut that directly accepts Holosun 507C optics without adapters. The mounting surface measures 1.6 inches wide by 1.2 inches deep with standard #6-32 mounting screws. No additional plates or modifications are required for installation.
- Does it fit Glock 19 holsters?
- No, the RM1S has different dimensions than Glock 19 and requires specific holsters. The slide width is 0.98 inches compared to Glock's 1.0 inch, and the trigger guard geometry differs significantly. You'll need holsters specifically designed for the RM1S platform.
- How long does shipping take?
- Standard shipping takes 3-5 business days for in-stock items, plus FFL processing time. All firearms ship via FedEx with adult signature required. Your local FFL dealer will need to receive and process the transfer, which typically adds 1-2 business days to the delivery timeline.
- Can I return it if it doesn't fit?
- Firearms purchases are final once transferred through an FFL due to federal regulations. We recommend handling similar-sized pistols at your local range before purchase. If you receive a defective firearm, we'll facilitate warranty repair through ROST MARTIN within 30 days of purchase.
- Does this work with suppressor-height sights?
- The RM1S requires aftermarket suppressor-height sights if using a red dot optic, as the factory sights are standard height. Most Trijicon and Ameriglo suppressor-height sights designed for compact pistols will fit the dovetail cuts, which measure 0.330 inches front and 0.395 inches rear.