Summary

A simple twist-on Ported muzzle device for the original Ruger 10/22 barrel.

No additional parts needed.
Print standing up.

There are 2 files.
One with the porting 90 degrees perpendicular to the barrel and one and one with the ports tilted 10 degrees forward.

Print with 6 walls and 50-100% infill.
Use supports where needed (inside slits ant on top of the "hook".

Test fitted on my Ruger barrel as pictured.