RAIL Active Governor Rewards
RAIL stakers become Active Governors and receive a slice of shielding/unshielding fees. 2% of the treasury is distributed to the claiming mechanism every 2 weeks. RAILGUN Active Governors then receive a share of this distribution proportionate to the amount of RAIL they have staked.
Rewards are distributed in ETH (or BNB/MATIC for other chains), RAIL, or DAI depending on the makeup of the treasury balance. Active Governors can claim their reward share (a transaction which requires gas) on whichever chain their RAIL is staked on. Further, Active Governors can only claim rewards from chains where they have RAIL staked.
For example, if your staked share of RAIL is 1% of all staked RAIL, then you would receive 1% of the 2% biweekly distribution.