Nope, after you unlock the exotic perk it can only have 4 total rounds at a time and you can't pick up ammo anymore. You don't get single rounds back either like icebreaker, you get 4 rounds every minute if you've used the 4 you already have. I'm surprised people don't hate this junk weapon more than NLB because invective is a piece of shit. Take my word for it don't read other comments.