I was just wondering, since I have not seen this posted before.... Does the the "Grenade Bandolier" cert give you an extra underbarrel grenade as well as a regular one? Or is the max 2 underbarrel grenades?
The Ammunition Belt is what you want, since that gives all weapons more ammo (and the grenade launcher is a weapon).
This would be good to know for certain. I wish more devs or moderators would chime in on this type of post, as I don't have Twitter.