A 5.56x45mm NATO magazine is an ammunition item. It is held in a player's inventory to supply Automatic Rifles so that they can be fired. It is also the ammunition used by Interior Turrets. If "Cargo Ships" are enabled in Survival mode, these can be found randomly generated in the cargo containers of the various Military ships.
The 5.56x45mm NATO magazine can be produced from an Assembler supplied with the following materials.