Rost Martin RM1S Comp 9mm 3.6in CA-Compliant

The Rost Martin RM1S Comp is a subcompact, optic-ready 9mm handgun designed for discreet carry and controlled shooting. It pairs a crowned 3.60-inch match barrel with an integrated compensator to help manage recoil and follow-up accuracy. The chassis features interchangeable backstraps, aggressive grip texture, and an RMR-style optics plate for mounted red-dot sights.

Key Specifications

• Chambered in 9mm for widely available defensive and training ammunition.
• The barrel measures 3.60 inches and is described as a crowned hammer-forged match barrel.
• The slide features an integrated compensator, top anti-glare serrations, and is optics ready.
• The frame is finished in black polymer and ships with interchangeable backstraps to fit multiple hand sizes.
• The trigger pull is listed as 5 pounds and is described in manufacturer text as a Double Action Striker (DAS).
• Includes an RMR optics plate for mounting mini red-dot sights.
• Sight configuration is listed as rear black serrated and front white dot.
• Overall length is 6.72 inches with a listed height of 4.4 inches with a flush magazine.
• Grip width is 1.1 inches for compact handling.
• The slide is described as nitrocarburized steel.

The RM1S Comp combines compact dimensions with features commonly sought for everyday carry and range use: an optics-capable slide, compensated muzzle management, and a modular grip system. Its compact footprint and integrated compensator make it suitable for shooters seeking a balance of concealability and controllability in a CA-compliant configuration.