One of my fellow editors here at Shooting Illustrated is about as big a sci-fi buff as your humble host, and he's also a might fair amateur gunsmith. He took it upon himself to create a working version of an iconic movie prop, and he details his adventure here:
Building a Live-Ammo-Firing Han Solo Blaster
Go read the whole article. It's well-worth the few minutes to read about this labor of love. And the gun's pretty darn neat, too:
Yeah. Han Solo's blaster brought to life. Pretty darn cool.
Now if I can convince him to make Captain Mal's sidearm...
That is all.