Weihrauch HW100 crown saver

Weihrauch HW100 comes without any endcap on the threaded part on the barrel so there is a risk of damaging the crown or the threads when moderator is not attached

This endcap covers all the threads and the crown.

There is a hole at the end but it's small so do not fire with this endcap attached

Endcap is knurled for easy handling 

NOTE:
as with any internal circles and threads, successful print is depended on how well your printer is tuned
I print this with 0,12mm layer height