The Crimson Trace CMR-301 Rail Master Pro is a firearm accessory that integrates a laser sight and a tactical light, designed for mounting on firearms equipped with M1913 Picatinny or M-LOK® rails. This device is intended to enhance target acquisition and visibility in various lighting conditions.
Function Description:
The CMR-301 Rail Master Pro serves as a dual-purpose aiming and illumination device. It features a visible laser for precise targeting and a high-output LED light for tactical illumination. The device offers multiple operational modes, allowing users to select between laser only, light only, or a combination of both. An optional remote switch provides flexible activation options, enabling momentary or constant-on operation. The laser sight is adjustable for both windage and elevation, allowing users to zero the laser to their firearm's point of impact. The integrated light offers multiple lumen output levels, providing versatility for different tactical scenarios.
Important Technical Specifications:
- Light Output: The light has a factory default output of 1000 lumens. It offers three selectable lumen levels: 1000, 500, and 150 lumens.
- Battery: The device is powered by a Li-ion rechargeable battery. The battery is charged via a USB Type C cable, with an LED indicator showing charging status (red for charging, green for charged).
- Laser Adjustment: The laser sight is adjustable for windage and elevation using two screws. Approximately 1/4 turn of the adjustment screw corresponds to 20 MOA (Minutes of Angle).
- Mounting: The CMR-301 comes with mounting options for both M1913 Picatinny rails and M-LOK® rails. The mounting screws should be torqued to 35 inch/pounds.
- Activation: The device can be activated via an ON/OFF button on the rear of the unit or through an optional remote switch.
- Operational Modes: Available modes include OFF, LASER, LIGHT + LASER, and LIGHT. The mode dial features phosphorescent icons for easy selection in low light.
- Momentary On: Lightly pressing and holding the activation switch provides momentary ON, releasing for OFF. This mode has a timeout of 45 seconds.
- Constant On: Pressing and releasing the activation switch provides constant ON, pressing and releasing again for OFF. This mode has a timeout of 5 minutes.
- FCC Compliance: The device complies with Part 15 of the FCC Rules, ensuring it does not cause harmful interference and accepts any received interference.
Usage Features:
- Mode Selection: A mode dial allows users to easily switch between different operational modes (OFF, LASER, LIGHT + LASER, LIGHT). The phosphorescent icons on the dial glow in the dark for improved visibility.
- Light Output Adjustment: Users can change the lumen setting by turning the light on and then rapidly pressing and releasing either activation switch four times. The light will blink to indicate a change in lumen output. The device remembers the last selected lumen setting.
- Remote Switch: An optional remote switch with a 5-inch cable is included, which can be mounted to any M1913 Picatinny rail. The remote switch connects to the device via a male plug that aligns with an Open LOCK icon on the adapter, then rotates clockwise to a Closed LOCK icon for secure attachment.
- Mounting Versatility: The inclusion of both M1913 Picatinny and M-LOK® mounting hardware provides compatibility with a wide range of firearms. The Muzzle Direction Arrow on the M1913 mount ensures correct orientation.
- User Responsibility: The manual emphasizes the user's responsibility for safe firearm use and recommends taking a gun safety course from a certified NRA instructor.
Maintenance Features:
- Battery Installation and Charging: To install or charge the battery, the light head must be unscrewed. The Li-ion battery is charged using the included USB Type C cable, which plugs into a port on the side of the battery. An LED on the battery indicates charging status (red for charging, green for charged).
- Battery Warnings and Disposal: The manual provides extensive warnings regarding battery safety, including keeping batteries away from children due to chemical burn hazards, securing the battery compartment, and seeking immediate medical attention if a battery is swallowed. It also advises against disassembling, charging (if not designed for it), or exposing batteries to water, fire, or high temperatures. Users are instructed to install batteries correctly, replace all batteries at once, store unused batteries in original packaging away from metal objects, remove discharged batteries promptly, and dispose of used batteries properly.
- Laser Adjustment: The laser's windage and elevation can be adjusted using two screws. The manual advises against overtightening the screws and notes that small adjustments (e.g., half a turn) are often sufficient.
- Warranty: Crimson Trace offers a "Crimson Protect Limited Lifetime Warranty" for its products. Electronic components are warrantied for three years from the date of manufacture against defects in materials and workmanship. Registration and warranty claims can be made via the Crimson Trace website.
General Warnings:
The manual includes critical general warnings, stressing the importance of reading and understanding all instructions to prevent injury or death. It highlights the need to follow firearm safety rules, ensure the firearm is unloaded and safe before installation or adjustment, and immediately contact customer service if the product affects the firearm's safe function. A specific warning about visible laser radiation emphasizes avoiding direct eye exposure to prevent permanent eye damage.
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