So, I discovered this bug a while back, but I assumed it was a known issue and you were working to fix it. I figured I might as well post the issue myself, just in case. The Black Hammer's White Nail and Hive Disruptor upgrades conflict. White Nail requires three precision shots to replenish ammunition. Hive Disruptor does bonus damage to Hive Majors. Instead of increasing the precision damage against Hive Majors, Hive Disruptor adds an additional damage tick that counts as a body shot, therefore, interrupting White Nail's requirement to activate. Hive Disruptor becomes White Nail Disruptor. I would have you disable Hive Disruptor until you have a working solution. I prefer to use my Black Hammer against Hive Majors with replenished ammo rather than an extra bit of damage. For all of you who have gotten a Black Hammer, don't upgrade the Hive Disruptor until Bungie fixes the bug and you won't have any problems.