Full discretion can be found here: https://xdna.io/bitgun
In short, the higher the hashrate the more coins are generate in every block, increasing the reward for Masternode holders and helping the GPU miners keep a steady reward. Right now the price has fallen to record lows and miners have left, therefore the GunBit level is 1 and the reward per block are the lowest possible, which will slowly help stabilize the price.