this isint a rig i just wanna tell you that you need to addd this to gmod pls i want it!

This is not what I meant. I want to use this model in Source Filmmaker. The way all models load up in SFM is without a rig, meaning if you move, for example, a hand along an axis, it detaches from the forearm and the attaching point is stretched out. This means the you can only really use the rotation tool to move parts of the model. This process is time consuming and overall not suited for effective animation. Here is where the rig comes into play. It keeps the model together, and you can't detach any limbs. I'm not sure if there is a rig that can be used for this model, since all models are uniquie in some way, and there aren't many universal rigs. The biped simple rig is an example. It is default to SFM and used for the TF2 character models. Also, I'm pretty sure that you can use this model in Garry's Mod. I think I read it in the model's description, so you should look there.