Force of Arms do some useful stuff.
Sloppy Jalopy has the ex-Chieftain range BMPS, BTRs etc.
If 1/48 appeals then there the Kitech/Academy kits of Abrams, LeClercs, Merkavas, Challengers etc. I have the Academy T-72 and it's way overscale.
Eureka produce an M113 as does Parkfield.