0 M4 heart rate sensor M4 heart rate sensor. As of games COD MW2. Author Gary Salva Model to replace M4 Brand M Model 4 Color Replace model files m4.dff (0.57mb)m4.txd (1.49mb) DOWNLOAD M4 heart rate sensor Download from unibytes.com Download from share4web.com Download from DepositFiles download the zip-file without installer