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The Armoury Review :: Mizumi: Oyakata

.: No notable statistics currently available



Manufacturer: Stadlbauer

Class:  Air - Pressurized Reservoir

  Item Number: 50200
  Copyright Date / Release Date: 2008 / 2008
  Availability: No Longer Made


Basic Statistics ::

  Weight: 834.00 g (29.47 oz.)
  Reservoir Volume: 880.00 mL (29.33 fl.oz.)
  Pressure Chamber Volume: N/A
  Pump Volume: Air Ratings .:

Power: 5

Range: N/A

Encumbrance: 45

Ergonomics: 65

Capacity: 40

Overall: 65

Blaster Dimensions :: 52.5 cm (20.67 ") x 14.5 cm (5.71 ") x 18.0 cm (7.09 ")

Shield Extended Dimensions :: 32.5 cm (12.8 ") x 14.5 cm (5.71 ") x 27.0 cm (10.63 ")

Length x Width x Height

Version Colours .:



Pressure Chamber




Green / Grey
Green / Orange

Nozzle Information: 1 .:


Range (level)

Range (45°)


iSoaker Output Rating

iSoaker Power Rating

Shot Time

Main ::



18.0 mL/s (0.6 oz./s)



15.0 s


  • Most statistics are from models tested by; individual performance may vary; some models exhibit greater variability than others (i.e. output, range, colours, etc.)
  • Please reference if you use any information from any part of this website.

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The Mizumi: Oyakata is believed to be a pump-action blaster (possibly pressurized) released in 2008 by Stadlbauer Inc. Originally believe to be a piston-blaster, the Mizumi: Oyakata actually is a pressurized water blaster. As noted on the overview website for the line, MIZUMI is Japanese for ‘body of water’ or ‘lake’. 'Oyakata' is Japanese for 'strength'. The Mizumi line is a Japanese Anime / Manga styled series of water blasters that are based on a Manga series: Manga Water World. Presently, we, at, have not actually seen any copies of this purported Manga series, but the water blaster line is available for purchase in North America.

The Blaster ::

mizumi_shubi_18_100Nozzle ::

The Oyakata features a relatively small, yet effective single nozzle. Powered by its pressurized reservoir, the nozzle produces a smooth, solid stream. Due to the general size, shape and balance of the Oyakata, the stream's power feels somewhat lower than other water blasters of similar size, but this may also be due to its high degree of lamination. Output is on the lower end, though, for a blaster this size.

mizumi_shubi_17_100Pump ::

The Oyakata's pump is forward-mounted and semi-tracked. While is a good position relative to the trigger-grip, the pump's shape feels somewhat odd and the ridges, as opposed to helping, feel a little awkwardly placed. Pumping, itself, seems to require more force than other similarly-sized blasters, but this may be also due to the odd ergonomics of the pump grip. It does take a fair number of pumps to adequately pressurize the reservoir.

mizumi_shubi_19_100 Trigger / Grip ::

The grip on the Oyakata is smooth, but feels secure to hold since it is encased by additional plastic shielding. While this additional plastic adds more to the blaster's form than function, it does give the blaster a different feel. Of course, since the additional plastic defines the grip area, this may potentially cause problems for those with larger hands. The trigger, itself, pulls smoothly and feels quite durable. However, trigger response does seems to lag just a touch.

Interestingly, the plastic area surrounding the trigger-grip includes a flip-up targeting sight. While not likely particularly useful in more standard water warfare games, this is a neat little feature to have. As an added benefit, the fact that the top of the back-side plastic can pivot upwards gives the user a little more room to move if needed.

mizumi_shubi_20_100The Reservoir ::

The reservoir of the Oyakata holds a decent amount of water for a water blaster of its size. The reservoir cap is mounted at the top and is externally tethered, requiring a more-than-usual number of turns to fasten it on. The intake hole in the reservoir is well positioned near basically at its lowest point when the blaster is held level. As such, the Oyakata is able to make use of the majority of its payload.

Overall ::

As a whole, the Mizumi Oyakata is a sturdy, Manga-styled water blaster with acceptable pressurized-reservoir performance. It does feel a little under-powered compared to other blasters of similar size, but it does perform decently nevertheless. Of course, due to its lower performance, one must definitely remain wary of pretty much any similar to larger air-pressure or elastic/CPS-based blaster.


Simple styling, clean lines, and good solid feel to the soaker.


Pump grip slightly strangely shaped. Performance on the low side for a blaster its size. Added plastic at the back adds to style, but may restrict arm movement.

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