WORST ATTACHMENTS FOR FIRE RATE

SNIPER

-1219
Arctic .50 FIRE RATE
WORST FIRE RATE ATTACHMENTS
Ammunition
-12
MIP Stopping Power Reload
-325
Locus FIRE RATE
WORST FIRE RATE ATTACHMENTS
Ammunition
-3
MIP Stopping Power Reload
-342
NA-45 FIRE RATE
WORST FIRE RATE ATTACHMENTS
Underbarrel
-3
Heavy Duty Trigger
-829
XPR-50 FIRE RATE
WORST FIRE RATE ATTACHMENTS
Ammunition
-8
OWC Stopping Power Reload

SMG

-273
AGR 556 FIRE RATE
WORST FIRE RATE ATTACHMENTS
Ammunition
-2
30 Round 5.56mm Mag
-281
QQ9 FIRE RATE
WORST FIRE RATE ATTACHMENTS
Ammunition
-2
10mm 30 Round Reload

MARKSMAN

-325
Kilo Bolt-Action FIRE RATE
WORST FIRE RATE ATTACHMENTS
Ammunition
-3
OWC Stopping Power Reloаd

PISTOL

-632
J358 FIRE RATE
WORST FIRE RATE ATTACHMENTS
Ammunition
-3
Stopping Power Reloаd
Trigger Action
-3
Heavy Duty Trigger
-341
MW11 FIRE RATE
WORST FIRE RATE ATTACHMENTS
Trigger Action
-3
Heavy Duty Trigger
HOW THEY GET PICKED

For this list I went through each weapon's attachments and gather the ones that have negative Fire Rate stat change.

I then sort the attachments from highest to lowest, and collect the highest negative Fire Rate change for each attachment type.

Note that if 2 attachments in the same category have the same change, the first one in the attachment list would usually win out.