Description

If you’re packing a subcompact for daily carry in the city, you know every split-second counts. The Rost Martin RM1S Comp 9mm 3.6″ Barrel Black w/ Viridian RFX11 is a purpose-built deep-concealment piece that pairs a factory-integrated compensator with a ready-to-run green-dot optic. It’s a striker-fired 9mm with a 3.6-inch hammer-forged barrel designed to keep your sight picture on target during rapid strings. The bundle includes the Viridian RFX11 reflex sight, RMR optic plate, and a Savior Specialist carry bag. This is a complete package for the urban defender who wants minimal recoil and maximum speed from a compact frame.

Manufacturer	Rost Martin (per manufacturer specs)
Model	RM1S Comp
Material	Hammer-forged steel barrel, polymer frame
Compatibility	RMR-style optic plate (included), Viridian RFX11 green dot
Finish	Black
Weight	Approximately 22 oz (unloaded, per manufacturer specs)
Condition	New

Key Features

• Integrated Compensator — Why it matters: The factory-milled comp on the 3.6-inch barrel reduces muzzle rise without adding length, so you can keep your dot on target for faster follow-up shots in tight indoor spaces.
• Viridian RFX11 Green-Dot Sight — Why it matters: This micro red dot offers a crisp 3 MOA dot with auto-brightness, giving you a clear aiming point even in low-light apartment hallways or parking garages.
• Striker-Fired Trigger — Why it matters: A consistent, crisp pull with a short reset means less training time to develop muscle memory for defensive drills.
• RMR Optic Plate Included — Why it matters: You can swap optics without buying extra plates—just mount your preferred RMR-pattern sight directly to the slide.
• Savior Specialist Carry Bag — Why it matters: A padded, discreet bag that holds the handgun, extra mags, and the optic so you can transport everything to the range without drawing attention.

Who It’s For

This is for the CCW holder who lives in a studio or one-bedroom apartment and needs a handgun that conceals under a t-shirt but still shoots flat. If you train weekly and hate fighting muzzle flip on a compact, this build is for you. It’s also for shooters who want a factory-comped gun with a dot already included—no gunsmithing required.

Pros / Cons

Pros: Factory comp reduces recoil noticeably; green dot is bright and clear; bundle includes bag and optic plate; subcompact size fits most IWB holsters.

Cons: Magazines are proprietary (not Glock-pattern), so you’ll need to buy spares from Rost Martin directly.

Comparison

Feature	Rost Martin RM1S Comp	Zev Technologies OZ9 Compact	Agency Arms Syndicate
Barrel Length	3.6″ with comp	4.0″	4.0″
Optic Included	Yes (Viridian RFX11)	No	No
Weight (unloaded)	~22 oz	~24 oz	~26 oz
Price	$502.21	$1,200+	$1,500+
Factory Comp	Yes	No (aftermarket only)	No

FAQ

Is the Viridian RFX11 included in the box?

Yes, the Viridian RFX11 green-dot reflex sight comes mounted on the RMR plate in the bundle, along with the Savior Specialist carry bag and other accessories listed in the manufacturer’s bundle notes.

What holsters fit the RM1S Comp?

Because of the integrated compensator, the slide is slightly longer than a standard RM1S. Most holsters molded for the RM1S with a 3.6-inch barrel and open muzzle will work, but we recommend checking with the holster maker for comp compatibility.

Can I swap the optic to a Trijicon RMR?

Yes, the included optic plate is RMR-pattern, so you can mount a Trijicon RMR or similar footprint optic directly. The Viridian RFX11 also uses the same footprint, so swapping is straightforward.

What is the magazine capacity?

The RM1S Comp ships with two 10-round magazines (restricted states) or two 12-round magazines (standard capacity, where legal). Check your local laws.

Is this gun easy to disassemble for cleaning?

Yes, it uses a standard striker-fired takedown: lock the slide back, rotate the takedown lever, and remove the slide. No tools required.

Get the Rost Martin RM1S Comp Today

The Rost Martin RM1S Comp 9mm 3.6″ Barrel Black w/ Viridian RFX11 delivers a factory-comped, dot-ready package at a price that undercuts custom builds. Whether you’re carrying in a crowded subway or securing your apartment at night, this compact gives you the edge. Order now and get the complete bundle—sight, bag, and all.

✓ Nationwide delivery (all 50 states) ✓ Ships 1-2 business days ✓ 30-day returns ✓ Secure checkout

Explore more: Semi Auto Handguns | Compact Pistols | Optic-Ready Pistols

Last updated: April 2026

According to industry data, over 60% of new CCW permits in the last year were issued to urban residents—underscoring the demand for compact, controllable defensive handguns like this one.