The Wilson Combat Super-Stoc Retro-Fit Kit using a standard carbine buffer. A standard carbine buffer typically weighs 3 oz. Typically, a carbine buffer should be fine with a 16" barrel or longer.
Hard Coat Anodized per Mil-A-8625F, Type III, Class 2
That specific model is not compatible with the WC-10 but they do make one for that application, which we do not currently carry.
As long as everything is Mil-Spec, you should be good to go.