This is a Breacher style muzzle brake found in popular video games.
This has a 14mm CCW thread that allows fitting to airsoft replicas ONLY!!! Any attempts to fit this flash hider/brake replica to anything other than airsoft replicas will likely result in injury!!!
Whilst not required along with the main brake there are shim files to allow you to "time" or align to your barrel in the correct orientation, use 1 or several of these in combination to get the best fit. A rubber O-Ring would also suffice.
Please note that none of my files are 100% accurate in any way and are my interpretation of pre-existing designs.
I have more designs available over at https://cults3d.com/en/users/AirsoftProtoTech/3d-models
3D PRINTING SETTINGS Material: PLA+ or Stronger however PLA is more than sufficient
Recommended to print vertically, supports shouldn't be needed
Print with Brim
4 Walls with at least 50% infill
I recommend using adaptive layer height if you can otherwise the finest that your printer can handle. The tips of this file are particularly fine so I would slow down the print as you reach the end
Tested on a Bambulabs P1P with no fitment issues however if threads seem tight I would recommend the use of a 14mm CCW tap to open them out.