Looking at Solo's Handi Blaster, you see that it is topped with a type of scope. Some have asked me "Why? - He never uses it!" Let me go out on a limb here. I have read that Solo's blaster has been less than ATF approved modifications, such as military grade energy packs and what not. His gun is capable of doing a great deal more damage. Should Han want to deliver this damage precisely, he would use the scope. When we have seen him use his Blaster in combat, no, he didn't use the scope. He might have even been killed if he tried to use it. "What?" you say. Let me explain.
Scopes on handguns are not fast devices to use, and in the shooting community it is debated on whether or not any sites are fast enough to use in combat, and there are to schools of thought on this. One school is the "Point Shooting" group, who believe in keeping your eyes on the target and pointing the gun naturally. A prime example of this is in the scene when Luke yells "No!" after seeing Ben get hacked. Look at his stance, feet wide apart, knees bent, arms out forming a triangle. Classic point shooting there. This is touted as been the fastest method of shooting and is also some times called the "Israeli Technique". The other side of the shooting coin is more concentrating on the front site - for accurate shot placement, you take a second and aim. Han uses neither styles in any strict sense. He uses an older point shooting method that is a throw back to the old western style of index shooting. This is actually very in character with Solo, whos primary style is "Just Blast it". Back to the scope, technically it is correct that he didn't use it in any of the depicted situations.
And quite often you observed Stormies packing MG-42s all over the place - never mind the dressing up on the MG, STOCK works just fine even in a galaxy far, far away. Mostly the Stormies are packing the DL-44, which is actually a dressed up British Sterling submachine gun - one of the finest subguns ever made. The Sterling, and the resulting DL-44, has a folding stock. The stock folds up under barrel on the bottom and can snap out to full extension very quickly. Of course, we never saw a trooper shoulder his blaster. If one had, then the movie would have ended rather abruptly. Fire from a shouldered weapon is on average much much more accurate and easier and faster to shoot as well. I like the Stormies - they have a Key Stone Cop feel to them when they are all firing. One of the worst insults I have heard on the firing ranges is "Your Shooting Like A Storm Trooper!" I laugh at Ben's line "Only Imperial Storm Troopers are so precise." This makes me believe a Fire Arms Instructor would make a great living there on Tatooine. That, and Imperial Trainers need a good butt kicking.
So, this leaves the question "Who is the best shot in Star Wars?" I am not sure, but I think Leia. She took out a Stormie with her modified Luger, one in the beginning of Episode 4, with a single shot right to the heart (just before she gets stunned), and two of them in episode 6, while on the forest moon of Endor. Not to mention the troopers she picks off with the DL-44 while covering Lukes butt while he's playing Tarzan after he blasted the controls to extend the bridge. You Go Girl!
There are lots of other noteworthy items to talk about. Like the Maxim Machine gun on Hoth and the Sheridan tank turrets there too. This hardware gives SW a lot of credibility. Look at these guns, Real Guns, then look at the latest Star Trek film. Just what the heck is a "Phaser?" That doesn't sound like a weapon to me. Think of this: You alone in a parking lot - a big hair thug is charging you before you can get in you car and drive away, this guy eats raw hobbits. Do you want to PHASE him? Or Blast him?