Found these codes while cleaning files. Don't know if they work or not so here
Holosight UMP
32D6-TTUJ-7X5H-QVY7
Holosight AUG
7Y29-P5U4-8K5T-YCB5
Holosight M249 SAW
CKCA-ARJ6-KTQW-GHPQ
Enhanced Scope M95
2Q5X-489X-LXML-HZHR
SCAR-L
5X3K-W4ZG-BU36-MMWT
SVU
GEJV-3DJN-NTEE-2BP7
MP5...