Did the amount of loot in solo reduce compared to normal mode?

I started doing solo's today, and I noticed something.

I can't find my favourite G7 and R99? I see mostly pistols, triple take and heavy rifles. 

I am being wrong here or did the amount of weapons and types of weapons reduce for solo mode? I played like 10 solos, and haven't been able to pick up a R99 or G7 in any of them, when in team setting i get them very quickly. 

Anyone else experience that?