TOKYO MARUI FPR MK 4 EVOLT RS Airsoft

MARUI FPR MK 4 [ RS Model ] - A patrol rifle customized for law enforcement agencies

The patrol rifle “FPR MK 4” joins the first installment of the Evolt RS line of electric guns, which reproduce real-world size, authentic handling, and recoil shock upon firing!

Featuring an exterior designed based on actual measurements for enhanced realism, it is equipped with a split-type gearbox and the “M-SYSTEM Type II,” optimized for the M4 series. New technologies have also been incorporated into the chamber and magazine mechanisms specifically for the Evolt and Evolt RS electric guns, making this a model that takes the realism of its appearance and handling—as well as the quality of its firing and operational performance—to new heights.

Key Features

• Recoil Shock Model When the trigger is pulled, a weight inside the buffer tube activates simultaneously with firing, generating intense recoil. Smooth-sliding POM material is used for the guide, and the 300g weight operates smoothly to enhance the recoil effect.
• Separate Mechanism Box By dividing the mechanism box into a “cylinder assembly” and a “gear box,” the upper receiver side (upper set) and lower receiver side (lower set) are completely separated. Although it is an electric gun, this allows for a more realistic takedown. A dedicated cover is included to protect the internal mechanisms when storing or transporting the upper and lower sets separately. The cylinder is a small-bore type with a low-friction fluorine-lubricated plating, featuring a minimalist design that eliminates unnecessary volume.
• EG1000BR Motor The gun is equipped with the newly developed “EG1000BR Motor.” It is a reverse-type motor with bearings. In addition, the design of the three gears (bevel gear, spur gear, and sector gear) that transmit the motor’s rotation to the cylinder has been revised, adopting “MIM (Metal Injection Molding)” instead of the conventional sintered process. Combined with the reduction of the spur and sector gear shaft diameters to 4 mm, this has resulted in improved durability, smoother rotation, and excellent quiet operation. High-precision bearings manufactured by Minebea-Mitsumi are used for the gear bearings.
• M-SYSTEM Type II The gearbox is equipped with the “M-SYSTEM Type II,” which is a dedicated design optimized for the M4 based on the “M-SYSTEM” from the next-generation MP5 series of electric guns. The MCU (Microcontroller Unit) monitors information from various sensors and voltage levels to not only switch firing modes and control motor rotation but also detect damage or abnormalities in various components and halt operation, making it a system that prioritizes safety.
• Pursuing Accurate Visual Reproduction By taking measurements from a non-functional real firearm, we have realistically reproduced the dimensions of each part, including the upper and lower receivers, the rail handguard equipped with M-LOK-compatible bases on both sides, the grip, and the buffer tube. The receiver features Cerakote, a coating known for its strength and excellent scratch resistance. The grip is made of reinforced resin, which balances thinness and durability to reproduce the realistic dimensions, while the deliberate decision to leave it unpainted also recreates the authentic texture of the real firearm.
• New Mechanisms for the Chamber and MagazineThe “Stabilizer Nozzle,” which stabilizes the nozzle position to improve accuracy, “Inner Elevation,” which applies upward tension to the magazine inner to prevent feeding malfunctions; and the “One-by-One Loading System,” in which the shutter inside the magazine closes after each BB is fed from the magazine to the chamber, ensuring no BBs are fed into the gun body until the next round is loaded after firing. These new mechanisms enhance operational performance and safety.
• Realistic Operation It reproduces a full range of operations and movements, such as loading the first round by pulling the charging handle, and when the magazine is empty, the dummy bolt holds open so that pulling the trigger will not fire a BB. Pulling the trigger after removing a magazine that still contains BBs also reproduces the “movement when a round remains in the chamber” (*). *For safety reasons, no BB will be fired in this case.
• Realistic, Press-Formed Magazine Capacity: 81 rounds. Includes a dedicated magazine featuring a steel-pressed outer casing. This magazine is designed exclusively for the M4 models of the EVOLT and EVOLT RS electric guns, which are equipped with the “Inner Elevation System” and “One-by-One Loading System.” *Magazines from other series cannot be used.