Turrets are weapons that are mounted on installations or on vehicles. There are two main types of turret, Large and Small. They also come in different weapon types, currently in the beta there is Railguns, Blasters and Missiles
Blaster technology harnesses magnetic containment fields to project superheated energy over short distances.
Missile launcher tech is comparatively unsophisticated. It's the missiles themselves and the supplementary tracking, targeting, and guidance systems comprising the delivery system that make missiles such deadly ordnance.
The railgun weaponizes velocity by using magnetic fields to accelerate projectiles to hypersonic speeds.