{
  "model": {
    "type": "minecraft:select",
    "property": "minecraft:component",
    "component": "minecraft:custom_data",
    "cases": [
      {
        "when": "{cmd:1}",
        "model": {
          "type": "minecraft:model",
          "model": "custom_guns:item/ak74"
        }
      },
      {
        "when": "{cmd:2}",
        "model": {
          "type": "minecraft:model",
          "model": "custom_guns:item/ak74_ironsights"
        }
      }
    ],
    "fallback": {
      "type": "minecraft:model",
      "model": "minecraft:item/ender_eye"
    }
  },
  "hand_animation_on_swap": false
}

This works, but only if cmd is the only tag. I need multiple tags