The "f" block is vet bring back and is all matching except the bandspring, which was missing. It features the early style lower band. 3371940 has a rifle a few thousand higher than this one in the picture sticky index and it has the block-type lower band as does the "g" block here. From these examples, it is clear they phased out the earlier style in the "f" block.
The "g" block is all matching except the rear bolt assembly and shows much more wear.
The "g" block is all matching except the rear bolt assembly and shows much more wear.