Summary

A short muffler for your M4A1 with the outer barrel inside, requires a little refinement, since I made the entrance with a diameter of 19 for tight dressing (undermined with sandpaper) inner diameter 20. Inside the thread is 14 left.
Files one-piece body, removable covers with thread and for gluing.

if you are interested and want to support my work, here is a link to the only type of donation available to me. Many thanks for your attention and support! This is really very important to me!!!
https://boosty.to/r163workshop/donate