Finally got around to completing the campaign and when I finished I noticed I had 12/13 attachments.

Here is what I have..

1. Pistol Silencer
2. Pistol Laser
3. Silencer
4. Laser
5. Extended Magazines
6. Reflex
7. Assault Scope
8. Sniper Scope
9. Grenade Launcher
10. Shotgun
11. Gauss
12. ???
13. ???

I do have the 12th attachment but I cant think for the life of me what it is. I do not think ive come across a Hologram projecter in the campaign.

12 is semi-auto, but just wtf the 13th is is a complete mystery. There have been a few threads on this before.

Most likely the Holo.
The fact that this is not even available in SP speaks for itself.

Maybe it's the bugged pistol silencer. Allways locked if you load a level or loose your gun.
I suggest so it doesn't count in the list of attachments.

isnt full auto for the jackal an attachment?

Nope. I have full auto for the Jackal and it still says 12/13.

Edit: That's really my first post here... hahah Could of swarn I made more than 1. o.O

- Pistol Silencer - Silencer (for SCARAB and DSG-1) - Semi-Automatic - Extended Clip - Light Shotgun - Grenade Launcher - Gauss Attachment - Iron Sight - Pistol Laser Sight - Laser Sight - Reflex Sight - Assault Scope - Sniper Scope

so.. ironsight and um. somethign else. semi auto.

shotgun silencers are a separate attachment I believe

^they aren't, and Iron Sights aren't an attach. And as far as the pistol silencer goes, mine isn't bugged, I still have 12/13.

funny....

and we are 100% sure that there are no attachments for special weapons like the K-volt?

K-volt can only do Reflex and Assault Scope. MIKE, L-TAG don't have anything at all and the Gauss can use Scopes + Reflex.

I do not think the shotgun silencer is a different attachment.

http://www.youtube.com/watch?v=BfS81F9uohc

I have everything shown in that video as a single player attachment. Looks like something is wrong.

possible DLC then