The 'UpRush', a WIP EXPT untested 'Crush' remix

Update: due to some complications, I can't print this until the the start of next year. sorry guys. its not abandoned though, if you do print it and encounter issues I am more than happy to fix them and help trouble shoot.

WARNING, I have not printed these files myself so print at your own risk!!!. I can't build this right now so I posted the files hoping someone else could. I don't see any reasons why it shouldn't work CAD wise. However, I have not physically tested it yet. This project is not abandoned, I intend on printing it when I have the resources to do so.

Intro:

The Crush was a great blaster. No weird custom CNC parts, relatively small BOM, smooth prime, sturdy construction, looks cool, hits pretty consistently, and has lots of community support (pretty common in the hobby). The only issue is its small plunger tube. It was hard to push far past 200fps. Because of this, I decided to create the UpRush remix (naming credit to bntn). It's an extended draw remix that should give you an extra 20mm of plunger volume. UpRush means a sudden burst or surge of gas/liquid. It seems appropriate given that this remix has more air volume. I calculated the swept pt volume and an UpRush should have about the same air volume as a harrier (don't quote me I don't have a harrier).

Building it + Hardware Changes:

It shouldn't be too hard to build, all you need is to reprint the lower, mag release mech, mid block and top rail. Just take out the old parts and put in the new ones! just remember to swap the threaded rods too.

New Hardware include:

• one M3x12 Screw for the release mech (if you decide to print the angled talon version)

• three M3 threaded rods around 270 to 275mm long

• one 38x35x121.6 PC or Aluminum tube (length can be a bit shorter)

• one Voron spec heat insert

• a longer barrel around 450mm long (optional but highly recommended)

• Lubricant (optional but highly recommended if you decide to use the angled talon lower. The mag release mech needs loads of it to operate smoothly.)

The chances are you will probably a lot of the hardware needed lying around in your workspace if you are an avid nerfer. I suggest buying a 150mm plunger tube and cutting it down to size. similar with the threaded rods, buy a 300mm one and cut 20 to 30mm off. Its also possible that your current spring might be to short depending on how much pre-compression you currently have. I will include spacers in the file set soon

Final Thoughts:

In my clearly biased opinion, an EXPT crush (if it works) would be one of the best blasters you could build. it solves what I think is the only flaw in the Rush family: the small PT. if you print it and it works, congratulations! please leave a comment so I know it works. if it doesn't work, well I warned you. if you could leave a comment on why it didn't work that would be awesome. This is still a WIP so I am still working on it. Thanks and good luck!

Check out my other models!

Change log:

14/9/26: Straight talon lower added. It's basically Kury's lower but lengthened by 20mm. you will need to print the mag release from his original files. This is also untested. If you have trouble reaching the mag release with your fingers you might want to try Seashellsoulus451's mag release.

2/10/26: changed the layout of the text and changed the name from Mush to UpRush. Mush sounded like some kind of distasteful food.

5/10/26: changed picture. Unfortunately, the shroud in the image is still in the works. I might release it someday.