The BlasTech Industries E-11 blaster rifle was a blaster rifle used during the time of the Galactic Empire. It was the standard-issue blaster rifle of the Imperial stormtroopers. A powerful, light and compact weapon, the E-11 was used widely throughout the galaxy for nearly a century and a half.

The E-11 belonged to BlasTech Industries' E-series of blasters and was based on the DC-15 series of rifles, carbines, and pistols, that were used by the Galactic Republic's clone troopers.
The basic E-11 was 438 mm long when folded and weighed 2.6 kilograms. The power cell housing opened on the left side of the action housing, above the trigger, giving the E-11 a very low profile (useful when shooting prone or from a barricade). The E-11's plasma cartridges allowed for over 500 shots, while the power cells lasted for about 100 shots, depending on the setting.
It had a long barrel that produced a tightly focused and very powerful particle beam with a maximum range of three hundred meters and an optimum range of one hundred meters. Because of this, it was considered best suited for close-quarters firefights, in particular the narrow confines of enemy installations and starship corridors.
The E-11 possessed select-fire capability, allowing a user to choose between semiautomatic and pulse-fire settings, as well as a rapid-fire setting that exchanged accuracy for an expanded firing area. It had a stun mode that could be set to varying levels depending on the target, with humanoid being one of these settings. The blaster's stun bolts were blue rings of energy with a larger aperture than standard explosive bolts, a product of the stun setting's wasted photonic energy byproducts.
The basic three-piece folding stock rode along the left side, under the power cell. When collapsed, the stock could be used as a foregrip to increase accuracy while also allowing the wielder to fire the weapon one-handed if they chose. It could be clipped onto the utility belt of a stormtrooper's armor for ease of carrying.
All moving and/or metal parts were fitted with a corrosion-proof, vacuum-rated dry lubricant, and required regular cleaning. The top of the receiver had a factory-standard universal quick-detach sight rail, typically mounted with a ring reticle 2x optical scope that could interface with the tactical head-up display within a stormtrooper's helmet. The scope was computer-enhanced, allowing it to compensate for dark, hazy, or smoky conditions, with a supplementary computer enabling it to display data specific to the weapon's current operating mode.
The E-11 could be fitted with multiple attachments such as an additional scope with about 8x maximum zoom that allowed it to serve as a small-scale sniper rifle - though it was not as effective in this role as the E-11s sniper rifle - and an electroscope that apparently linked with the weapon's systems to overenergize the bolts fired for additional range and damage. It could also mount a projectile launcher capable of firing various special-purpose ammunition such as grenades, flares, darts, and grappling hooks.
The E-11 allowed a high-capacity power element to be attached into a separate slot in the bottom of the barrel, but since its standard capacity was quite high, this additional option was rarely used.
The E-11 rifle proved to be a highly versatile design, spawning a wide number of variants over the course of its production history.