Made this model for a fun ECI.

This is used as a type of flag to show that your firearm is empty. So others can see it no problem, I would suggest using a bright color.

Used the Omega symbol from the God of War games.

This will fit down to a .22 cal barrel.

100% infill

Please, if you are using any semi auto, don't drop the slide/action on it. I can't say for certain if it would hold up to that force.