I just got a 22 revolver made in Miami Florida by F.I.E arms. This is a well used gun. My question is , it doesnt have an ejector tube assembly on it. Looks like it's missing. I've found online where I can get one for a Heritage revolver that'll fit but my gun doesn't have the hole in the bottom of the barrel to screw in the set screw. Does anyone know anything about this issue? Thanks.