About 30 minutes ago, I decided to try out frag grenades rather than concussive shot in multiplayer. (About 29 minutes ago was when I started kicking myself for not trying out grenades sooner).
I noticed that you can refill your thermal clips pretty much anytime – the ammo crates restock themselves faster than an Ubercharged dispenser. Grenades, on the other hand, aren't always there for the taking; usually, I have to go kill some dudes first.
What determines when grenade pickups respawn? Time, kills, waves, or something else entirely?
Best Answer
The grenade spawns are time based, they're just on a different timer than the ammo respawn.
You can quickly see if there are grenades available in a stash as they have their own distinct graphic.
Also, there are different amounts of grenades per stash depending on the map and difficulty. For example, Firebase Ghost has 2 grenades per ammo stash, on bronze you'll get 2 grenades from each for 4 total. On silver and gold, you'll get 1 from each for a total of 2: