Remove screws 14 and 15.
Part C is a stabilizer and grounding contact to help absorb movement while the Blu-ray drive is in use. This may be located in a different area of your drive as decided by the manufacturer. There may also be additional ones. Make sure when reassembling to put this stabiliser back in the same place as it is originally found even if it is not found in exactly the same location as this article. Failure to do so could result in disc scratching.
Remove the silver coloured drive cover.