This actuator is quite tiny, which is nice, and pretty strong for its size though unfortunately not strong enough for my purposes. It's a little noisy but not overly so. The 6v requirement is convenient when you're trying to run off of battery power.
M
Mark
Firgelli mini linear actuator
The L12 Linear Actuator 100mm 100:1 6V is quite small and neatly built. It is exactly what I was looking for as the 6v requirement is suitable for my RC bulldozer power pack.