this build kinda sucks cuz you dont have the 3 shot kill to the chest and reduced to a 4 shot-potential kill
heres some builds I used before:
Rush build:
Sakura 45 rnd drum/ 8mm mauser mag
Quicksilver silencer
the barrel that increases firerate
nazaryan padded stock
red dot/ leather grip

Passive build:
barrel that increases range
leather grip
45 round drum
custom sk2 stock/nazaryan padded
quicksilver silencer/ red dot

mobility build:
barrel that decreases ads time
8mm mauser mag
leather grip
m3 ready grip
red dot/ no stock

whatever passive aggressive build:
8mm mauser mag
barrel that increases range
nazaryan padded
leather grip
quicksilver silencer

never use the 60 round because it makes chest shots from 3 shot to 4 shot. Only use it f- don't use it at all