▁with ▁the ▁guns ▁de pressed ▁low . ▁For ▁some ▁reason , ▁besides ▁the ▁M 5 7 7 A 1 ▁command ▁vehicle , ▁all ▁of ▁versions ▁of ▁the ▁M 1 1 3 A 1 ▁had ▁the ▁passenger ▁compart ment ▁he aters ▁removed . ▁In ▁the ▁late ▁ 1 9 8 0 s , ▁the ▁fleet ▁was ▁issued ▁with ▁German ▁B M 8 0 0 5 ▁image ▁intens ifying ▁night ▁vision ▁driving ▁per is cop es , ▁which , ▁with ▁the ▁aid ▁of ▁an ▁adapt or , ▁could ▁be ▁fitted ▁to ▁replace ▁the ▁driver ' s ▁central ▁per is cope ▁for ▁night ▁driving . ▁In ▁the ▁early ▁ 9 0 s , ▁the ▁fleet ▁was ▁issued ▁with ▁V IN SON ▁family ▁ci pher ▁equipment , ▁typically ▁a ▁single ▁K Y - 5 7 ▁per ▁vehicle . ▁This ▁allowed ▁the ▁command ▁net ▁to ▁be ▁en ci pher ed , ▁but ▁the ▁admin ▁net ▁would ▁normally ▁work ▁en ▁cla ir . ▁ ▁M 1 1 3 A 1 ▁Fire ▁Support ▁Ve h icle ▁( F SV ) ▁- ▁Full ▁design ation ▁Car rier , ▁Fire ▁Support , ▁Full ▁Track ▁M 1 1 3 A 1 ▁( FS ) ▁Sal adin ▁Tur ret ▁was ▁a ▁variant ▁fitted ▁with ▁the ▁tur ret ▁from ▁the ▁Al vis ▁Sal adin ▁arm ored ▁car . ▁The ▁F SV ▁was ▁introduced ▁into ▁Australian ▁Army ▁units ▁in ▁the ▁mid - 1 9 6 0 s ▁following ▁the ▁withdraw al ▁of ▁the ▁Sal ad ins ▁and ▁was ▁armed ▁with ▁a ▁ 7 6 mm ▁gun