Hi Co-carb
You just have to read labels is right!
I've been buying the Boars Head Bratwurst and they are 0g carbs plus I have 2 locally made in Texas sausage brands (one-lb link) that I have found and are both all meat and also 0g carbs.
You just have to search them out at different stores until you find what works.
Ground Pork is surely a safe way to go and then just add your own spices to the mixture.