Francisco Javier Navarro García sent us a link to this Facebook Page showing photos of his InJotec Machine Gunners Assault Pack. Based on the Tyr Tactical Huron MICO - Machine Gunners Assault Pack, this can carry around 150,000 BBs, 11.1v 4000mah Lipo Battery and still some more space for other things. With this setup, your M249 can continously provide a hail of BBs in support of your airsoft team.