in game mesh don't show after weight painting

Question

As you know, the beta shotgun has the ejector port on the wrong side, so try to fix it in blender, I took the charging handle and mirrored it then assigned it to the handguard bone so that it would move next to it in the animation like in mmod, after compiling with crowbar and starting the game the charging handle can't be seen, what did I do wrong?

TauGuy · Answer

Try compiling model with an crowbar tool maybe that helps