i already said. mortars. cut the roof off and bolt the base plate to the floor. the us has a dedicated version of the m113 that is basically that. the m106, i believe. there have been a lot of mt-lb mutants in this war. some good. some not so good. here's a uke-built mt-lb with a 100mm rapira mounted in it used as a tank destroyer/spg. it's not bad.
United States