I'm specifically looking at the Oshkosh Defense
https://oshkoshdefense.com/vehicles/fmtv/ produced FMTV units which are "Long-term Armor Strategy (LTAS)" compliant, featuring A- (factory installed) and B- (field configurable) armor kits.
The M-ATVs
https://oshkoshdefense.com/vehicles/m-atv/ utilize a Plasan composite armor plus blast seats for the crew.
Finding any kind of data on or description of the kits or composite has pretty much been fruitless since the systems are current and I was hoping someone on the forum might have a guesstimate based on prior knowledge of armor systems (not my specialty).