Should the values of MGs - and other small arms, for that matter - be given another go-over?
Spoiler : :
I think 7.62mm-tier weapons deserve a 0.6 HE value or thereabouts.
I think the suppressive power of 12.7mm/.50cal weapons should be slightly reduced, maybe to 85.
I think the KPVT (14.5mm) should have the characteristics (and price-logic) of 12.7mm-tier MGs, and have a reduced or absent AP value (0.5 or nil).