Ruger
FRF Addict
You have to be careful removing the skid plate (with power). Those damn nut clip thingys like to break.
I've been changing my own oil and dropping the skid plate to do it since I bought the truck in 2011. Haven't busted a SPCT (Skid Plate Clip Thingy) yet. My beer powered ratchet has a sensor that can actually feel things like that and back off on the torque. It's analog, not digital, so I have to remember to lube the internals once every ten years or so. Brushless, too.