The Rifle can have hundreds of thousands of variants, but overall has a high rate of fire, decent accuracy, moderate reload speed, and minimal recoil. However, this can all point to companies.
Dahl assault rifles tend to have excellent damage, optimal accuracy and moderate reload. However, the burst-fire effect can sometimes become a hassle in the heat of combat. Dahl Rifle with the Vladof barrel and "Double Tap" prefix have a special property of firing two bullets per shot for the cost of 2 ammo, and always have a 2-round burst when zoomed in (for a total of 4 bullets).
Jakobs assault rifles are highly powerful and very accurate, but often suffer from the semi-automatic effect associated with most Jakobs weapons; this issue is often reduced with Jakobs rifles that use the Dahl barrel.
Torgue rifles often sacrifice accuracy for damage, although this is somewhat compensated for by a large magazine size.
Vladof rifles often combine both advantages of accuracy and firepower, also having large magazines; an example being the Spinigun.
Stomper - Unique assault rifle of Jakobs manufacture with increased critical hit bonus.
Damned Cowboy - Unique assault rifle of Jakobs manufacture with increased damage, accuracy and critical hit bonus.
Evil Smasher - Uniqueexplosive assault rifle of Torgue manufacture with below par performance that has a small chance to enhance the power of the next magazine.
Kitten - Unique assault rifle of Vladof manufacture that fires a pattern in the shape of a smiley face.
Rapier - Uniquecursed assault rifle of Vladof manufacture with increased melee bonus, decreased bullet damage and added vulnerability against melee attacks for the wielder.
Seeker - Seraphexplosive assault rifle of Torgue manufacture that fires homing rounds.
Bekah - Pearlescent assault rifle of Jakobs manufacture that fires bullets which then split into three while traveling.