Weapon Mods showing up in Ranged and Melee weapon lists

[ShadowWalker]

I've made some weapon mods that are themselves weapons. Everything works except for one small wrinkle. They show up in the Add New... window.
Is there a way to make it so they don't show up on those screens but still show up in the mods/accessories screens as well as being shadowed to the appropriate area?

I was thinking it would have to be done within a Render script, but I've no idea where to start to even look for examples of this.

 

[Mathias]

Why not let them show up there? Is there anything that prevents you from buying a bayonet and using it on its own, even if you don't own a gun to put it on?

Also, being able to show up as a normal weapon, on its own, is a necessary thing if the character decides to remove the bayonet from his rifle, then sell that rifle, buy a better one, and move the old bayonet to the new gun.