Tokyo Marui's new EVOLT RS line arrived on May 27 with its first model, the FPR MK 4, a patrol rifle built for law enforcement use. The headline feature isn't the outside. It's that the mechbox is split in two, so the upper and lower receivers come completely apart the way a real AR-pattern rifle does.

That's unusual for an electric gun. A conventional AEG keeps its whole gearbox in one block inside the lower receiver. Tokyo Marui has broken the mechbox into a cylinder assembly that rides in the upper and a gearbox that stays in the lower. Covers in the box protect the internals when you store or carry the two halves separately.

Recoil you can feel

The FPR MK 4 is a recoil shock model. A 300g weight in the buffer tube moves with each shot, riding on POM guides so it slides smoothly. Tokyo Marui says that setup increases the kick.

A new motor, MIM gears and a smarter brain

The FPR MK 4 runs Tokyo Marui's new EG1000BR, a reverse-type motor with bearings. The bevel, spur and sector gears move from sintered metal to metal injection molding (MIM), and the spur and sector gears now ride on 4mm axles. Tokyo Marui says the changes make the drivetrain tougher, smoother and quieter. The gear bearings come from MinebeaMitsumi.

Running the show is M-SYSTEM Type II, a version of the microcontroller system from Tokyo Marui's Next Gen MP5, reworked for the M4. It watches sensors and voltages to handle fire selection and motor control, and it can stop the gun if it detects damage or a fault.

Magazines that load one BB at a time

The included steel-pressed magazine holds 81 rounds and uses two new systems. Inner Elevation pushes the magazine's inner section upward to prevent feeding problems. One by One Loading closes a shutter in the magazine every time it sends a BB to the chamber, so no more BBs reach the gun until the next round is fed. A stabilizer nozzle in the chamber keeps the nozzle position steady for better accuracy.

The manual of arms follows the real rifle. You pull the charging handle to load the first round, and when the magazine runs dry the dummy bolt locks open and the trigger stops firing. Pull a magazine that still has BBs in it and the gun reproduces the "round in the chamber" behavior, though for safety it won't actually fire.

The magazine is specific to the EVOLT and EVOLT RS M4 models. Magazines from Tokyo Marui's other series won't fit.

Specs and price

  • Length: 724 mm, 806 mm with the stock fully extended
  • Barrel length: 229 mm
  • Weight: 3,100 g with empty magazine and battery
  • Capacity: 81 rounds
  • Fire modes: full and semi-auto
  • Ammo: 6mm BB, 0.2 to 0.28g
  • Battery: Tokyo Marui MS Li-Po stick-type
  • Price: ¥120,000 before tax (Japanese suggested retail price)

Outside, Tokyo Marui measured a deactivated real rifle to get the receivers, M-LOK handguard, grip and buffer tube to size. The receivers wear a Cerakote finish, and the grip is left unpainted reinforced resin so it can stay thin and look closer to the real part.

A platform, not just a rifle

Tokyo Marui calls the FPR MK 4 the first EVOLT RS model, which suggests more rifles will follow on this split-mechbox base. At ¥120,000 it's a serious buy, so the question for players is whether real takedown and a smarter control board are worth it. Philippine pricing will depend on local importers.