The Rost Martin RM1S Comp is a striker-fired 9mm pistol with a 3.6-inch compensated barrel and a 15+1 capacity. It has an optics-ready slide, a Picatinny rail, and a Black Nitron finish. The bundle includes a Viridian RFX-11 Green Dot sight, a 12-round flush magazine, three 15-round magazines, and a bag. 
 

Key Specifications 

• Brand: Rost Martin 
• Model: RM1S Comp 
• Caliber: 9mm 
• Action: Semi Auto (Striker-Fired) 
• Capacity: 15+1 
• Barrel Length: 3.6 in 
• Color/Finish: Black Nitron 
   

Detailed Features 

• 3.6-inch compensated barrel 
• Optics-ready slide with Viridian RFX-11 Green Dot included 
• Picatinny rail on frame 
• Ships with 12-round and three 15-round magazines 
• Includes carrying bag

Owners of the RM1S Comp bundle appreciate the value of getting a green dot and extra magazines in one package. The Viridian RFX-11 is a compact sight that co-witnesses reasonably well with the slide profile, and most buyers run it right out of the box without swapping to a different optic.

The integrated compensator is the RM1S Comp's defining feature. Owners report noticeably reduced muzzle rise on fast strings compared to a standard-length barrel, which is the main reason buyers choose this model over the base RM1S. The compensator does add length, and holster compatibility is a common follow-up question for those who want to carry it.

Rost Martin is a newer name in the pistol market and the RM1S Comp draws curious interest alongside some skepticism. Reliability reports from early adopters are mostly positive, but the brand lacks the long track record that established striker-fired platforms carry. Trigger feel splits opinion; some find it acceptable from the factory and others budget for aftermarket work.