{
    "M4 R3 LIGHT": ["M4 R3LIGHT" ],
    "M4 SS4450": ["M4 SS4450" ],
    "M4 SS4450B": ["M4 SS4450B" ],
    "M4 SS4451": ["M4 SS4451" ],
    "M4 SS4452": ["M4 SS4452" ],
    "M4 SS4453": ["M4 SS4453" ],
    "M4 SS4455": ["M4 SS4455" ],
    "M4 SS4456": ["M4 SS4456" ],
    "M4 SS4457": ["M4 SS4457" ],
    "M4 SS4457-R": ["M4 SS4457-R" ],
    "M4 SS4458": ["M4 SS4458" ],
    "M4-SS4453-R": ["M4 SS4453-R" ],
    "M4-SS4457-R": ["M4 SS4457-R" ],
    "M4-SS4458-R": ["M4 SS4458-R" ],
    "M4_B1": ["M4 B1" ],
    "M4_B2": ["M4 B2" ],
    "M4_B3": ["M4 B3" ],
    "M4_R2": ["M4 R2" ],
    "R2_Plus": ["R2 Plus" ]
}