I noticed most of the ES crew (that means  chilovek savagelycan leamur fluffypunk) uses battle rifles for their infantry. While Callentine uses the MA-3 and ALARM bullpup rifles, I have not mentioned about their predecessors - the 7.62x51mm MA-2 and MA-2K, as well as the accurized MA-2S (the S being only recently modernized). These rifles (yes, to answer your queries, I based it off the FAL and the G3) are commonly used by home guard units, as well as special forces units, but it isn't uncommon to see a typical Callentine infantryfur with one of these, particularly the K variant.