Does anyone else have the problem where certain weapon attachments in the single-player campaign mode won't unlock? pointing out the pistol silencer especially :/

I unlocked the pistol silencer recently, and was able to use it for a while. And then, later in the campaign (completing it again on Supersoldier difficulty), I pick up the M12 Nova and Hammer and it says that the pistol silencer is locked! Hmmmm... Brilliant!

that is exactly whats happened with me :(:(:( i want my silencer!!!

When doing my campign on Supersolider half way through all my attachments reset for the Scarab

It's quite an incovenience because its the most valued attatchment in the game to me, Using stealth and a silenced M12 NOVA to be able to shoot in stealth is invaluable.

If it was something like the Laser sight I couldn't care less.

its the only reason im stuck at 99.28% =(