Board Thread:Questions and Answers/@comment-24765155-20140724164326/@comment-4058379-20140724175920

Primary weapons is disabled when using Stalker Cloak.

As of patch 2014/07/02 all advance variants of Forward Grips and Laser Sights have been condensed down into a single attachment unlock. All certification points that have been spent on these attachments have been refunded. If you still have it equipped in one of your weapon it will reset to default weapon every time you log in.

As of patch 2014/06/19 Medical Applicator use to revive, and  to heal.