[Help please]

I created a Weapon using igor that came with my copy of GR and i want to use it in a multi player game but the weapon doesn't show up in any of the weapon choices how do i get it to play in multi player games?

[Help]

I created a weapon and my step dad wants it as well so we can use them networked but i don't know why they don't show up in the multi player weapon choices can anyone help me please?