I have a like new MPA ambi matrix in tungsten It has no marks that I have found or noticed. $1,450 shipped
It has
Comp side rails
Gray ops steel side rail weights
Side rail weights are tapped and threaded to add a gray ops dog bone. (Reason for the screwes) for more weight.
Internal weights
Butt stock weight
Bag stop
4 trigger spacers
Extra grip
2 round holder
Arca spigot
It has
Comp side rails
Gray ops steel side rail weights
Side rail weights are tapped and threaded to add a gray ops dog bone. (Reason for the screwes) for more weight.
Internal weights
Butt stock weight
Bag stop
4 trigger spacers
Extra grip
2 round holder
Arca spigot