I've been using the Ruin Wings a lot lately. Normally I run almost exclusively Gjallahorn in my Heavy slot for PvE. I switched it out for a machine gun just for some leveling and I noticed heavy ammo dropping like nuts. The machine gun didn't have Surplus as a perk either. Has anyone tested or noticed this as well? Sometimes I feel like when I run my Gjalla with the Ruin Wings, there is no difference in ammo drops at all.