Also known as the M242 Bushmaster. 
Used by |
| 1964 |  Sacramento class support ship AO | 1 |
| 1965 | Hamilton class coast guards W | 2 |
| 1976 | Tarawa class assault carrier LH | 4 |
| 1985 | Whidbey Island class landing ship/platform dock L | 2 |
| 1987 |  San Giorgio class landing ship/platform dock L | 2 |
| 1989 | Wasp class assault carrier LH | 3 |
| 1991 | Arleigh Burke Flight I class guided-missile destroyer DDG | 2 |
| 1995 | Harpers Ferry class landing ship/platform dock L | 2 |
| 2000 | Arleigh Burke Flight IIA class guided-missile destroyer DDG | 2 |
| 2010 |  Protector OPV class corvette FS | 1 |
| 2011 |  Buque de Accion Maritima (OPV) corvette FS | 2 |
| 2012 | Sentinel class coast guards W | 1 |
| 2017 |  Hobart class guided-missile destroyer DDG | 2 |
In Service |
| US Navy |
| US Coast Guard |
 Bangladesh Navy |
 Philippine Navy |
 Nigerian Navy |
 Vietnam Coast Guard |
 Sri Lanka Navy |
| Italian Navy |
 Algerian National Navy |
| Royal New Zealand Navy |
| Spanish Navy |
| Royal Australian Navy |
