About the design
Looks like a rocket but "under the hood" it's all FPV racing drone components :-) This thing is quite a lot of fun to build and fly. I reached speeds of around 200 km/h on a 4S battery. But I clearly recommend this only to people who are experiences in building FPV quadcopters or have general experience with model aviation. Controlling this setup will be an absolute nightmare for inexperienced pilots especially takeoff and landing. On the other hand if you are a pretty decent FPV pilot you won't have any problem flying this, the camera angle isn't as crazy as it looks and it handles pretty much like a normal 3" if you don't try to do crazy maneuvers.

A few words on takeoff and landing
You can run this on a fairly normal camera angle of 45-50° so lading is pretty much the same as on an aggressive FPV racing setup apart from the fact that you have to be way more carefully. Just slowly make it hover close to the ground and disarm. For Takeoff tape a roll of toilet paper to the ground and stick the rear part in to hold the quad upright....

Compatible parts

• Max. 3" propellers
• Motors with 14xx sized stator and 12x12 M2 mounting pattern.
• 20x20 ESC/FC stacks
• 14mm nano cameras
• Batteries around 850mah 4S

Recommended components

• Motors:GEPRC 1408 4100kV
• Flight Controller & ESC: Diatone F405 Mini
• Camera: RunCam Nano 2
• Battery: Tattu 850mah 4S R-line
• Propellers: Gemfan 3052
• Video Transmitter: Eachine Nano
  In addition to that you will need a compatible 2.4ghz radio controller and 5.8 ghz FPV goggles e.g. FrSky R-XSR, Eachine EV800D, FrSky X9 Lite

Printing Recommendation:
I recommend you use material that is stiff enough and reasonably easy to print like PLA, PLA+ or PETG. 20-30% infill will be enough.

https://youtu.be/xDDV1he8dAQ