The Rost Martin RM1C is a striker-fired 9mm compact pistol with 17-round capacity and an optics-ready slide using an RMR-pattern adapter plate. The two-tone Stone Gray frame with nitrocarburized steel slide is the visual signature of the platform. 
 

Key Specifications 

• Brand: Rost Martin 
• Model: RM1C 
• Caliber: 9MM Luger (9x19 Para) 
• Action Type: Striker-fired (DAO) 
• Capacity: 17 Rounds 
• Barrel Length: 4 inches 
• Weight: 1.34 lbs (21.5 oz) 
• Sights Configuration: Single Dot Front / Serrated Rear 
• Optic Mounting System: Adapter Plate (RMR Pattern) 
• Finish: Two-tone with Stone Gray Frame 
   

Detailed Features 

 
The RM1C has an overall length of 7.10 inches and a height of 5.50 inches, which puts it in standard compact carry dimensions. The 17-round capacity gives it a meaningful edge over smaller-capacity compacts at similar size. The nitrocarburized steel slide with black Tenifer finish resists corrosion well for daily carry or storage. The RMR-pattern optics plate is included for direct red dot mounting. The DAO action provides a consistent trigger pull throughout the firing cycle, and the ambidextrous controls accommodate left-handed shooters.

The RM1C draws cautiously positive feedback with a few consistent concerns worth knowing before buying.

The compact dimensions combined with the 17-round capacity get consistent praise. Most 9mm compacts in this size class run 15 rounds or fewer, so the capacity-to-size ratio is a genuine differentiator that comes up in most comparisons. The optics-ready setup with the included RMR adapter plate is well-received by shooters who want to run a red dot.

The build quality is generally regarded well. The Stone Gray two-tone finish gets mixed cosmetic opinions but the materials and construction quality hold up positively in hands-on reviews. Range performance is solid — groupings and reliability are both described positively by most owners.

The trigger is the most common criticism. Some users find the pull heavier than expected or less refined than competitors in the same price bracket. This is the area where Rost Martin gets the most consistent feedback for improvement.

As a newer brand, aftermarket accessory availability is limited. Holsters and parts options trail the established carry gun platforms by a meaningful margin, which is worth factoring in for buyers who plan to build out a carry setup. Some early units showed initial break-in issues that resolved with round count, which is noted enough in reviews to be worth a thorough function test on first use.