and has been tried, tested and used by law enforcement and military forces around the world. This ammunition uses brass casings and boxer primers making it 100% reloadable. When everything is on the line, you can count on X-Tac to deliver.These 200 round battle packs are packaged as 10 boxes of 20 rounds and sealed for waterproofing and corrosion resistance making them perfect for long term storage under any conditions.