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Rost Martin RM1S 9mm Slide and Barrel Kit with Integrated Comp 3 60 Inch Black RM10199 UPC 850067485964
Product Description
The Rost Martin® RM1S 9mm Slide and Barrel Set with Integrated Compensator (SKU: RM10199 / UPC: 850067485964) provides an elite factory performance upgrade for the RM1S sub-compact handgun platform. Engineered to transform your concealed-carry handgun into a high-speed, flat-shooting tactical tool, this factory drop-in kit incorporates an integrally compensated slide and factory-ported barrel that vent expanding propellant gases upward upon ignition. The resulting downward counter-thrust reduces felt recoil and muzzle climb by up to 25%, enabling rapid sight-picture re-acquisition, flatter shot tracking, and tighter split times under high-stress defensive engagements.
Every RM1S compensated slide is precision-machined from solid steel billet and treated with an ultra-durable nitrocarburized Tenifer finish, delivering extreme surface hardness (exceeding 60 HRC equivalent) and superior protection against sweat, holster wear, friction, and environmental corrosion. Paired with a 3.60-inch hammer-forged steel match-grade barrel, the assembly maintains exceptional mechanical tolerances, concentric bore geometry, and unwavering accuracy. Deep front and rear grasping serrations give operators positive mechanical traction for rapid press-checks, malfunction clearances, and one-handed manipulations, while fine anti-glare striations across the top slide flat eliminate sunlight refraction across your sight line.
Designed around modern target acquisition protocols, the slide comes factory optics-ready with a modular mounting cut that accepts Rost Martin adapter plates, providing direct, low-bore-axis mounting for industry-standard micro red dot sights including the Trijicon® RMR® and Holosun® 407C/507C/508T footprints. The steel combat sights feature a high-visibility white dot front moved rearward behind the port cut and an anti-glare serrated U-notch rear sight dovetailed directly into the slide steel. Whether upgrading your daily carry RM1S or tailoring a dedicated sub-compact training platform, the RM10199 assembly delivers uncompromising Dallas-born craftsmanship and flat-recoil performance.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Direct factory fit on Rost Martin RM1S sub-compact 9x19mm Luger frames. CRITICAL: This assembly is NOT compatible with the compact 4.0-inch Rost Martin RM1C frame, nor any third-party polymer or metal striker-fired frames. Compensated barrels function most reliably with standard-pressure 115gr, 124gr, or 147gr defensive loads exhibiting robust slide impulse; avoid underpowered target handloads during initial break-in. Fastener torque specs: Torque red dot optic mounting plate screws to 15 in-lbs using medium-strength threadlocker (Blue Loctite® 242 or 243).
- Ensure the host firearm is completely clear, magazine removed, chamber visually and physically inspected, and all live ammunition removed from the armorer bench area.
- Depress the takedown lever, cycle the action forward, and remove the existing factory slide, recoil spring assembly, and standard barrel from the RM1S receiver.
- Lubricate the barrel locking lugs, barrel hood, and slide rail channels using premium synthetic gun oil; insert the 3.60-inch hammer-forged ported barrel into the RM10199 comped slide, verifying complete lockup against the breech face.
- Install the factory captive guide rod and recoil spring assembly into the slide lug recess, ensuring centered engagement on the barrel lug step.
- Carefully align the slide assembly onto the receiver rails, rack fully to the rear, verify that the takedown lever latches into position, perform a comprehensive dry-fire function and reset check, and stage for range qualification.
Key Features
- Integrated Slide Compensator & Ported Barrel: Precision top expansion chamber directs high-pressure gases upward to mitigate felt recoil and muzzle rise by up to 25%.
- Nitrocarburized Surface Hardening: Salt-bath Tenifer nitrocarburized steel finish resists caustic holster sweat, aggressive cleaning solvents, and extreme abrasive wear.
- Hammer-Forged 3.60-Inch Barrel: Precision-rifled barrel ensures match-grade bullet stabilization, tight velocity standard deviations, and extended service life.
- Modular Optics-Ready Platform: Factory machined optic cut interfaces directly with Rost Martin steel adapter plates (Trijicon RMR and compatible footprints).
- Aggressive Cocking Serrations: Deep, clean front, rear, and anti-glare top serrations ensure unyielding weapon purchase wet or dry, with or without gloves.
- Dovetailed Steel Combat Sights: Features a high-contrast white dot front sight repositioned behind the port and an anti-glare serrated U-notch rear.
Product Specifications
- Brand: Rost Martin®
- Model/Series: RM1S Comped Slide and Barrel Kit
- MPN / SKU: RM10199 / RM10199-E
- UPC: 850067485964
- Caliber: 9mm Luger (9x19mm Parabellum)
- Barrel Length: 3.60 in (91.4 mm)
- Slide Width: 1.10 in (27.9 mm)
- Slide Metallurgy: CNC-Machined Billet Steel
- Barrel Metallurgy: Hammer-Forged Match Grade Steel
- Slide Finish: Black Nitrocarburized (Tenifer / Nitride)
- Sights: White Dot Steel Front / Serrated U-Notch Steel Rear
- Optic Cut: Factory Modular Optic Ready (RMR Adapter Plate Compatible)
- Platform Compatibility: Rost Martin RM1S Sub-Compact 9mm Pistol
- Country of Origin: United States of America
