Information on the AFP's acquisition of M203 grenade launchers:
From
The 5.56×45 Timeline by firearms historian Daniel E. Watters. Formerly hosted at the now defunct
The Gun Zone website, now
archived elsewhere.
1976
The US provides 229 M203 to the Philippines as part of a military assistance package. A separate FMS of 1,500 M203 is also made.
1977
The US provides 500 M203 to the Philippines as part of a military assistance package.