Dowloading Free 3d Models

We're currently taking / requesting bids for the following agenda. If you have an interest in helping with this project join now and we can get you started.
Project: Armament
Role: Game Artist 3D

Objective
We need someone to pull as many free 3d assets of military armament items that are currently used in todays military either foreign or domestic.  These asset need to be looked at and verified that the scale they use is real life.  Then upload these asset to our site one by one as *.FBX format.