Tokyo Marui - Glock 17 Gen5 MOS GBB

Tokyo Marui SKU: 144089


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Tokyo Marui - Glock 17 Gen5 MOS GBB

G17 Gen5 with “MOS (=Modular Optic System)” specification, which can be equipped with a dot sight, is now available! It reproduces the features of the G17 5th generation (Gen5), such as changes to the slide front part (addition of chamfers and serrations), a grip without finger channels, and a slide stop with an ambience specification. Furthermore, we have developed a new blowback engine that has increased cylinder capacity by approximately 20% despite being a MOS specification, and the magazine has also been upgraded. While achieving the hardest recoil of any gas blowback model of the same type, it is also highly durable thanks to the use of new materials.


  • Compatible with separately sold micropro site

    The slide is specially designed to allow installation of the “Micro Pro Sight” (sold separately). By removing the cover at the rear of the slide, you can attach the microprosite via the mounting spacer.

  • New cylinder compatible with MOS

    By developing a new blowback engine, the cylinder capacity has been increased by approximately 20%. In order to absorb the harder recoil, the slide uses highly durable carbon-containing resin.

  • Reproduce the 5th generation G17

    The more advanced Gen5 features chamfers and serrations on the front of the slide, a slide stop that can be operated with either the left or right hand, a grip that eliminates finger grooves to accommodate hands of various sizes, and a flared magwell that makes it easy to set the magazine. Reproduce the specifications of.

  • Grip back strap included

    Comes with 2 types x 2 sizes (S/M) of back straps. You can adjust the grip comfort according to the size of your hand.

  • cocking indicator

    Equipped with a gimmick that allows you to easily determine whether the main body is ready to fire based on the resting position of the trigger.

  • New die-cast magazine

    Capacity: 25 rounds, gas capacity increased by approximately 20% compared to conventional G17 magazines. Comes with a die-cast magazine that is resistant to cold.


WEIGHT 676 g (with empty magazine installed)
BULLET 6mm BB (0.2~0.25g)
POWER SOURCE Dedicated gas (*1)
NUMBER OF BULLETS 25 + 1 shot (1 shot when loaded in the main body)


G17 Gen.5 MOS body, magazine (25 rounds), backstrap short (M/L), backstrap long (M/L), backstrap jig, backstrap pin for backstrap, mount spacer, micro Pro sight screws x 2, protective cap, handling precautions/instructions, order form, cleaning rod, BB bullets (0.2g/100 shots), etc.