yeah the synergies are mod types. certain vendors offer certain synergy mods. ie- Top Notch ToolWorks offers the Well Prepared Synergy i think. not positive. anyway the numbers underneath of the weapon description mean you will get that type of weapon perk if you have that many matching synergy mods. for example where it says something like [3] 10% ammo regen per second, if you have 3 synergy mods for the type it says you will get that perk assigned to the gun. sounds confusing because im sure i didn't explain it as well as i could have.

