Commando droid most likely, it's reflexes are too fast for him, if he gets a lucky shot he could win though, but realistically the commando droid would shoot the blaster out of his hand then proceed slice him with the vibroblade, the only people to take on commando droids and win are jedi are experienced clones
Originally posted by Fated Xtasy
Wasn't Old Han taking on a couple of Mandos during The abeloth crisis?
This is him as of ANH though, so that shouldn't count.
But then again...considering he's older there....but nah can just disregard that really. Doesn't really need much considering his aim and skill with a blaster anyhow.
That being said, Han can get this on his fast draw and dead aim. His blaster, DL-44 is already a powerful blaster factory stock, Han took that and modified it to make it even moreso.
So damaging the Commando Droid isn't much an issue. There isn't much room for the droid to maneuver either inside the Falcon, so it's not gonna be pulling out any fancy agility stunts.