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Rost Martin RM1S Comp 9mm Pistol, 3.6" Barrel, 15 Rounds, with Viridian RFX-11 and 4 Magazines
Rost Martin RM1S Comp 9mm Pistol, 3.6" Barrel, 15 Rounds, with Viridian RFX-11 and 4 MagazinesRost Martin RM1S Comp 9mm Pistol, 3.6" Barrel, 15 Rounds, with Viridian RFX-11 and 4 Magazines, photo 2Rost Martin RM1S Comp 9mm Pistol, 3.6" Barrel, 15 Rounds, with Viridian RFX-11 and 4 Magazines, photo 3Rost Martin RM1S Comp 9mm Pistol, 3.6" Barrel, 15 Rounds, with Viridian RFX-11 and 4 Magazines, photo 4

Overview

The RM1S Comp is Rost Martin's subcompact 9mm with a built-in compensator, a 3.6-inch barrel and an optic-ready slide. This bundle, as listed, includes a Viridian RFX-11 green dot and four magazines: one 12-round and three 15-round.

Specifications

MakerRost Martin
ModelRM1S Comp, optic-ready
Part no.RM1SBLKOSPCOMPSPL
Caliber9mm Luger
Capacity12 or 15 rounds
Barrel3.6 in, compensated
BundleViridian RFX-11 green dot, one 12-round and three 15-round magazines

More about the Rost Martin RM1S Comp 9mm Pistol

The Rost Martin RMS1 Comp 9mm is a purpose-built, optics-ready sub-compact pistol designed for the discerning shooter who demands performance in a concealable package. Chambered in 9mm Luger, this model represents a significant evolution in the defensive handgun category, blending a compact 3.6-inch barrel with an integrated compensator system. It is engineered for individuals seeking a reliable, flat-shooting sidearm for everyday carry, home defense, or competitive training. The included Viridian RFX-11 green dot optic and the generous bundle of four magazines (one 12-round and three 15-round) make this package an exceptional value, providing everything needed for immediate deployment and extended range sessions.

Key Features

  • Integrated Compensator System: The 3.6" match-grade barrel features a crowned muzzle and is paired with a slide designed to house an integrated compensator. This system redirects gases upward to actively combat muzzle rise and recoil, allowing for faster, more accurate follow-up shots.
  • Optic-Ready Platform: The slide comes milled from the factory to directly accept the included Viridian RFX-11 green dot optic. This provides a low-profile, co-witness capable sighting solution for enhanced target acquisition and precision, without the need for separate adapter plates.
  • Enhanced Capacity & Flexibility: This bundle includes four total magazines: one 12-round for maximum concealment and three 15-round for extended capacity. This offers the shooter practical options depending on their activity and attire.
  • Sub-Compact, Semi-Automatic Design: With its 9mm chambering and compact dimensions, the RMS1 strikes an ideal balance between shootability and concealability. The semi-automatic action ensures reliable cycling with a wide range of ammunition.
  • Match-Grade Barrel: The cold hammer-forged barrel provides consistent accuracy and long-term durability, with a precise fit to the slide for improved lockup and shot-to-shot consistency.
  • Complete Out-of-Box Readiness: Unlike many firearms that require significant additional investment, this bundle is a complete system. It includes the optic, multiple magazines, and a compensated pistol, ensuring it is range-ready from the moment you take possession.

About Rost Martin

Rost Martin has established itself as a serious contender in the firearms industry by focusing on innovation and direct value. Rather than resting on legacy designs, the brand invests in modern manufacturing techniques and listens to end-user feedback to refine its products. The RMS1 platform exemplifies this approach, addressing the growing demand for compensated, optics-ready handguns at an accessible price point. Their emphasis on including critical accessories—like a quality optic and multiple magazines—in base packages demonstrates an understanding of what today's shooters actually need. This commitment to providing complete, performance-oriented systems builds trust and positions Rost Martin as a pragmatic choice for knowledgeable firearm enthusiasts.

Before you order

  • FFL transfer: firearms ship only to a licensed dealer you choose at checkout. You pick it up there with a photo ID after the ATF Form 4473 and background check. The dealer's transfer fee is paid to them. How FFL shipping works
  • Cost: $29.99 flat-rate shipping per order, free on orders over $999.
  • Returns: firearms can be refused before transfer; after transfer they cannot be returned for refund, but the maker’s warranty applies. Full return policy
  • Legal: you are responsible for making sure an item is legal where you live; if an order cannot be filled lawfully we cancel and refund it in full. Questions? FAQ or contact us.

Buying this in Missouri

Missouri buyers pick this handgun up at a licensed dealer after a NICS check, with no permit to purchase and no waiting period; dealers require age 21 under federal law. Read the guide

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