▁the ▁basic ▁version . ▁ ▁M 1 1 3 A 1 - B - EN G ▁- ▁Squad ▁vehicle ▁for ▁combat ▁engine ers . ▁Some ▁of ▁the ▁ 1 1 3 ▁delivered ▁are ▁fitted ▁with ▁an ▁hyd ra ul ic ▁do zer bla de . ▁ ▁M 1 1 3 A 1 - B - TR G ▁- ▁Driver ▁tra iner . ▁ ▁M 1 1 3 A 1 - B - M IL ▁- ▁T ank ▁h unter ▁with ▁pint le - mount ed ▁M IL AN ▁and ▁two ▁ 7 1 mm ▁Ly ran ▁mort ars . ▁All ▁ 5 6 ▁vehicles ▁have ▁been ▁modified ▁into ▁art illery ▁FO ▁vehicles . ▁ ▁M 1 1 3 A 1 - B - Mor ▁- ▁The ▁original ▁version ▁was ▁used ▁to ▁carry ▁the ▁M 3 0 ▁ 4 . 2 " ▁mort ar , ▁but ▁all ▁ 3 5 ▁vehicles ▁have ▁been ▁upgrad ed ▁to ▁to w ▁the ▁Thompson - B rand t ▁MO - 1 2 0 - RT ▁ 1 2 0 mm ▁mort ar . ▁ ▁M 1 1 3 A 1 - B - MT ▁- ▁Main ten ance ▁vehicle ▁with ▁fol ding ▁work ▁table ▁on ▁the ▁right ▁rear . ▁ ▁M 1 1 3 A 1 - B - M TC ▁- ▁Main ten ance ▁vehicle ▁with ▁hyd ra ul ic ▁H IAB ▁c rane . ▁Similar ▁to ▁the ▁M 5 7 9 . ▁ ▁M 1 1 3 A 1 - B - Rec ▁- ▁recovery ▁vehicle