Gavin derivatives!
Taiwan's CM-21. I think those two large sponsons are extended fuel tanks? Bit of a weird overhang. It has the sloped rear to allow firing ports when those were all the rage (and we'll see them again soon. Note that the forward seats are benches on the outside facing inward, but the rearmost 4 are folding seats facing outward, in order to use the ports
Philippines upgrade with an Israeli remote turret and a 25mm cannon
Australian M113AS4, stretched hull (extra roadwheel) like the Canadian TLAV and a new one-man .50 turret
Canadian TLAV (stretched hull) engineering vehicle in Afghanistan
Canadian ADATS
Canadian M113 with slats and extra tall radio antennae in Afghanistan
Retired Danish IFV model with a 25mm cannon in an OTO Melara turret. It looks a lot like the 2-man 25mm turret on the Spanish VEC-M1
Italian VCC-1 APC. Similar to the Taiwanese CM-1 with the rearranged interior and firing ports
Malaysian AIFV
Malaysian AIFV on stretched chassis
Korean KIFV with what looks a bit like an ACAV-style gunshield for the M2. I would NOT want to be that driver with the GPMG deployed facing forwards from the cargo hatch!
KIFV chassis with the weapons from an M163
Dutch YPR-765s in Afghanistan. This one with a 25mm Oerlikon, but others seem to have the M2 with wraparound gunshield. Some of these have been passed on to Ukraine. Note the large antennae - I'm starting to think that was something necessitated by operating conditions in Afghanistan
Philippines fire support vehicle (FSV) with a Scorpion turret. Same idea as the Aussies
Singapore SHORAD version using of all things, Igla missiles. Wonder if Ukraine will rig up something similar with their donated M113s
Singapore's upgraded IFV using a Rafael RWS with a 25mm Bushmaster or a new cupula with a 40mm AGL and machine gun
Swiss Schützenpanzer 63/89 with a Swedish turret armed with a 20mm Oerlikon
Turkish M113A2T1 with an M45 quadmount. Profile is a little on the tall side...
More AA. Italian SIDAM quad 25mm
And for a real throwback, the LVT-5 and LVTH-6. Both linger in service in small numbers with Taiwan and Philippines