Shipping a prop replica gun into the US

[Spaceboy]

Hello.
I am trying to work out if it is legal to post a replica prop into the US from New Zealand. I know I have to declare it is partly made from wood so it can be checked but wasnt sure what else I needed to do. Does anyone know? It looks like this so could be easily mistaken for something real.

 

[bikemancs]

Create an orange tip or tape/paint the tip orange and make sure it's labeled something like "replica". It looks like the magazine has fake bullets in it,I would make sure it's separate and labeled as well. a Quick letter inside addressed to the TSA/DHS/ICE with a very short explanation that it's a non-functioning prop and can't be made to fire live rounds (look at an airsoft or fake gun on ebay and use a disclaimer similar) would probably be good too.