The RM1S Subcompact from Rost Martin chambers 9mm with a 3.6-inch match barrel and a 10-round magazine, built for concealed carry. Its slide carries an RMR cut for a compatible red-dot optic, and this listing bundles the pistol with a Viridian RFX11 optic and four spare magazines. Grip texture is deeper than a standard polymer grip, and a manual safety lever adds carry control alongside ambidextrous slide and magazine release controls. 
 

Key Specifications 

• Brand: Rost Martin 
• Model: RM1S 
• Caliber: 9mm 
• Action: Semi-Automatic (striker-fired) 
• Capacity: 10 Rounds 
• Barrel Length: 3.6 inches 
• Color: Black 
   

Detailed Features 

• RMR-cut slide accepts a compatible red-dot optic 
• Manual safety lever for added carry control 
• Trigger is flat-faced with a notably short reset 
• Front sight is a white dot, rear is black and serrated 
• Deeper grip texture for a more secure hold 
• Ambidextrous slide and magazine release controls 
• Bundle adds a Viridian RFX11 optic and four magazines

Subcompact 9mm pistols built around an optic cut draw a specific crowd: people who want a pocketable gun that still runs a red dot. Feedback on the RM1S generally praises the trigger feel, with the short reset standing out as a highlight for a gun in this size class.

Carry comfort is rated well given the shorter grip and barrel, though as with most subcompacts, felt recoil is snappier than on a compact or full-size 9mm. The manual safety is a point some shooters like for pocket or appendix carry and others skip using day to day, which is typical of any carry pistol offered with one.

Bundled optics and extra magazines are a common draw for buyers new to the RM-series, since it lowers the cost of getting a red-dot-equipped subcompact running out of the box. As with the rest of the RM lineup, holster and accessory options are still expanding.