As it stands right now the omnilube is applied to all firearms for the same 50 shots, which makes its comparatively more worthwhile on weapons with high AP per shot, as you get more mileage out of these 50 shots, likely lasting several fights. Conversely, on the weapons with high rate of fire those 50 shots can go very quickly, especially when you consider the new LMGs and miniguns introduced in Heavy Duty. I suggest that different weapon classes and calibers should get different amounts of buffed shots from a single bottls of lube. A 12.7 sniper rifle could get, say, 10 shots with improved damage, while a 5mm SMG would get 100.
Alternatively its function could be changed/augmented to reduce how much weapon durability degrades with every shot.
