Stat Mutators

These are used to reroll the stats on your weapon. Previously you could roll from -10 to +10, but now you can only roll from 0-10! Consumed by right clicking on your gun and selecting [Reroll Stats] under the upgrade menu. 

 

It is important to keep in mind that using these, it does not guarantee an upgrade of the weapon. 
The recommended way to use them, if you've already got a gun with good stats, is to have a "secondary" weapon you reroll until it is better than your current one. 
The best roll is a supreme which gives stat 10 on everything! Rolling base supreme is a 1/200 chance! Rolling Supreme +1 and above is even harder!

During the “ROLEY POLEY” Event, your odds on making a weapon supreme increase so watch those events!

Memory Chip

Alyx has made a handy little item using some of Kleiner's tech, A Chip capable of restoring Weapons Stats during rerolls so you can save your progress! 
When Rerolling you can set the stats on your gun you want it to save, so if you don't get the results you wanted while Rerolling not all is lost!