WR75 Water Rifle
Print Profile(2)
Bill of Materials
- M5x20 x 1:
- 440mm+ PH2.0 extension cable (male to female) x 1: E.g. aliexpress sell extension cables in different lengths. If you can solder you can also just cut the cable from the sprayer and solder on an extra length of wire to make it longer.
Description
WR75 - WaterRifle 75
This is a functional battery powered watergun that is using the spray kit sold on MakerSupply. It can be printed without the spray kit/electronics as well if you want to use it for Halo cosplay instead. It is printable on the A1 mini and larger printers. There is an detailed assembly guide on how to put togheter this watergun.
The gun is 78cm long in the short barrel version. (without the silencer or other barrel accesories)
Note! If you are printing it as a toy to play outside with in your yard please print it in bright colorful colors so it is visible that it is a toy. And as with any toy guns don't take them with you out on the streets/parks etc.
Note! Depending on the intended usecase it might be recommended to print it completely out of PETG, i.e. if leaving it outdoors for long where the sun gets hot PETG is better.
Overview Video
Assembly guide can be found here:
https://docs.google.com/presentation/d/1TSmlfqU7vPOOmv2BQyaWSOmGN7gLUxXO9DjbWI12duY/edit?usp=sharing
Boost Me (for free)
Please consider a boost if you like this model, this will help/motivate me to make more content. Any help will be appreciated!
Updates
23.6.2025
- A Scope has been added, you can slide the the scope on the top rail. The scope is available as it own print profile. The assembly guide contains instruction on how to build it. The scope build chapter comes last in the assembly guide.
8.6.2025
- Two pieces were missing from the print profile, they have now been added, when downloading the updated profile these pieces can be found on plate 25.
2.6.2025
- The Bubble Launcher attachment has been published. You can find it here: https://makerworld.com/en/models/1480656-wr75-bubble-launcher-attachment#profileId-1545985
29.5.2025
- Changed the cap design on the magazine, the old TPU cap only worked reliably with really soft tpu brands. No TPU needed for the new cap. Old magazines are still compatible with the gun.
- Added a Barrel Compensator/Muzzle Breaker to the print profile. This can be screwed on/off in the existing threads inside the barrel tip. This is more for looks, if using it as a water gun long barrel attachments might interfare with the water stream
Features
Functional magazine
Magazine can be removed by unlocking it with the thumb slider. And a new one full with water can be inserted.
Changeable Clipis Modular design, allow for easy customization and easy to dissasemble
Top handle can be removed, and other front sight modules mods etc. can be created and attached intead to change the type of rifle.
Picatinny rails where extra accessories and optics can be attached.
A Bubble Launcher module is availabe. Perfect for covering your tactical retreat or confusing your oponent. The bubble launcher module can be found here: https://makerworld.com/en/models/1480656-wr75-bubble-launcher-attachment#profileId-1545985
Scope attachment 
Bubble Launcher attachment 
Bubble Launcher Replaceable grip
Replace/Create custom grip for maximum comfort. Most M4 compatible grips should work.
Barrel Attachments
Barrel is threaded so you can attach different attchments to it, e.g. Muzle Break, Silencers, Barrel Extensions etc.
Split panels for customziable color schemes without AMS
Create your own unique look by printing the panels in the colors of your choice, no AMS needed.
The body panels can be printed in different colors to make your own color scheme 
Optional integrated lcd screen
An 0.96" lcd display can be mounted inside the top handle if you want to build some extra features into the rifle, e.g. shoot counter, water level in the tank etc.
Use the lcd to add extra cool features like water level gauge, shot counter etc. 
0.96" screen integrated in the top handlewith room for buttons as well 
Access hatch for the battery
Flip open the rear shoulder pad to reach the battery to remove it.
Documentation (1)
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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