Halo 3 Mongoose Action Figure
From Halopedia, the Halo wiki
This is a miniature version of the Halo 3 vehicle, the Mongoose. It will be about $9.99 and will be available in most places.This is set to be Released in June 2008. It will be released by McFarlane Toys, along with many other vehicles. No images are available of the Mongoose at this time.
