[
  {
    "id": "usp40mag",
    "copy-from": "usp9mag",
    "type": "MAGAZINE",
    "name": { "str": "H&K USP .40 magazine" },
    "description": "A standard capacity magazine for use with the Heckler & Koch USP .40 handgun.",
    "ammo_type": "40",
    "capacity": 13
  }
]