man, the double engie + penal opening will be massive powerful now
Honestly, the difference is so small, you probably won't even notice anything. Beyond their rifles being more reliable instead of being RNG cannons, of course. The largest difference (range 25) is only 0.47 DPS.
And worst case, if they do happen to perform noticeably better, we can always manually change their accuracy so their DPS will (mostly) match the DPS they had with the 16 damage rifles.