Ammunition boxes are found in many places in the Capital Wasteland, the Mojave Wasteland, and the Commonwealth. Some are locked, and all but a notable few contain ammunition when initially found (some ammunition boxes in Rivet City, specifically at Flak 'N Shrapnel's, are locked but empty). Players with the Scrounger perk will find considerately more ammunition in ammunition boxes than those without it. The contents of most ammunition boxes randomize on a per-game basis.