I haven't seen any but in my experience blaster IO builds are driven more by the secondary than the primary. Blaster primaries have a lot of similarities in terms of what IOs they can slot so you don't have that many options.
For Dual Pistols the only unusual things are that you can slot Slow and Knockback sets in most powers (which are handy for cheap frankenslotting but less useful for a full up IO build unless you don't mind the damage loss from Kinetic Crash) and you have a choice of hold or stun sets in your mez (pick whichever you use more or use HOs to get both).
I've been looking for IO Build guides for Dual Pistols, and my search has come up empty. Has anyone seen one that they can point me to?
TIA!