So, ever since Update 170, DMRs have been basically trash tier. Sporting a measly "reliable" 1 round per box pickup rate, you'd run out of ammo super fast. To make matters worse, light sniper rifles pick up 2-4 rounds per box, while also benefiting from penetration and Graze. Don't forget the LMGs...
I'm surprised nobody else thought about doing this, so here I am. This mod reverts the ammo pick-up of all DMRs + DMR kits to around where they were before the nerf (~1-3 rounds vs just one). As it stands, the pickup is still worse than the light snipers (especially the DMR kits), but it should be far more sustainable than normal, especially since Ammo Efficiency is more accessible, or if you have a good secondary.
I didn't make the DMR kits' pickup the same as the normal DMRs because the 100 damage rifles actually already have a pickup of 1-3 bullets. It felt weird to not have it penalize at all, so crappy (but still better) old values it is.
I might make a version that raises the pickup of all of them to 3-5 shots or something at some point (as well as buffing the base 100 damage gun pickup to compensate).