Doug is right, of course, the nomenclature can be a bit puzzling. With the introduction of the CG T50(Aust) turret in the late 1960s, there were two armament configurations decided upon: the APC with twin .30cals, and the LRV (Light Recce Veh) with the .50/.30 combination. Units designated as 'APC' units like 3/9SAMR were to be equipped with the APC variant, while recce units like XLH in Western Australia were to be equipped with the .50/.30 armed LRV. The distinction was soon dropped, in part due to operational experience by 3 Cav Regt then serving in South Vietnam. By the early/mid 1970s, both the APC and LRV were equipped with the .50/.30 combination. This is covered in my book 'The M113 and M113A1 in Aust Service 1964 to 1971' - I still have a few copies left if anyone wants one. PM me.
The introduction of the Scorpion turret version of the Fire Support Vehicle also saw the alignment of the nomenclature with the LRV nomenclature introduced in 1968, by designating the new vehicle the Medium Recce Veh - MRV. There was no 'HRV'.
There were 48 Scorpion turret MRVs built (not 42), all on new-build APC hulls purchased from FMC in 1972-1973. Their registration and hull numbers are not sequential, but are scattered through the registration numbers allocated to a larger order for APCs.
The earlier FSV was a combination of the Saladin turrets removed from the 15 Saladin armd cars purchased by Australia in the late 1950s. The first (prototype) was mounted onto a previously registered APC which was later given a new number, and the other 14 mounted on new-purchase APCs supplied by FMC from their San Jose plant. The registrations were 134700 to 134714 for the total of 15.
I have an official diagram somewhere that details the differences between T130 and T130E1 track. I'll post it when I find it! The AWM was fortunate to acquire a pallet load of the early T130 track to equip the APC on display in the SVN gallery.
Mike
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