Last para of item 72 is misleading. Copy of the recent USMC RFI for airburst 40mm cartridge grenades is available at
https://www.neco.navy.mil//synopsis_...13_Oct_11.docx

RFI specified proximity fuzed 40mm LV grenades to engage defilade targets between 30 and 150 metres. Ammunition to be compatible with M203 and M32 launchers without requiring any modification or addition of equipment. RFI closed on 5 Dec 2011 at 4PM.