My advice is to try alot of different combos and see what works for you.
STG-77 (Rifle Laser and Long Suppressor)
M-16A2 (Rifle Laser)
IW-80 (Front Grip and Long Suppressor)
SIG 552 (Rifle Laser and Long Suppressor) (Front Grip and Long Suppressor)
M-8 (Long Suppressor)
HK-7 (Rifle Laser and Short Suppressor)
M-4A1 (Front Grip and Long Suppressor)
AG-94 (Rifle Laser)
F-90 (Long Suppressor) *Don't let people call you a noob. If you want it, use it...bottom line*
Maybe that'll give you some different ideas on how to use the attachments. You can always just use the weapon without attachments if you want.
Also, don't worry about the cheaters. There is enough rooms/maps that you can leave and go somewhere else to have fun. Play alot of respawns to get your skills up too.
