A long time ago in a galaxy far, far away.... In a time when a crumbling Republic combated a clouded Confederacy; giving birth to a tyrannical Empire and a Dark Lord to be feared for ages to come...
Here are some of the blasters that have been modeled for out clone troopers.
We have the DC-15a rifle.
The DC-15x sniper rifle (as seen in the Battlefront series).
And the WESTAR-M5 rifle, which is used by ARC troopers.