I never realized what exactly that did, but after playing a few matches and seeing a couple of people taking me down at a rather rapid rate using this endorsement, I was just wondering what exactly it does.
Everytime you shoot a bullet you roll for a chance to get criticals (if you have them activated first by an upgrade or endorsement) and then if you do you get crits for a few seconds (something like 1 or 2 seconds on an automatic gun or for that single shot). The crits themselves I think are multipliers of the damage you do and the higher the endorsement the higher the multiplier. Then if you juice since it's 100% crits you do more damage. Or something like that but in english.
btw, most guns already have crits. minigun has crits from start. deploy has crits already from start. deploy 2 just increases critical percent (3 more bursts of critical shots within a bronze clip). on a odd side note, i tested deploy 3, and it seems to do as many crits as deploy 1. isnt it supposed to keep crits from deploy 2 upgrade?