So, they've been slowly starting up a small selection of  skate parts in the corner of the store next to the ugly sunglasses that cost too much. They barely have anything. Like, maybe 10 decks on the wall that are mostly long boards, 5 trucks, 3 boxes of griptape, and only one box of bearings. The people that work there have no idea what makes up a skateboard let alone, know what you're looking for. The parts are  terrible quality. Crappy brand of grip,  ABEC 3 bearings that are a total joke, and trucks that turn terrible for the price. It seems that they  got the parts that look cool but have no idea how terrible they work on a board. Only an idiot long boarding noob would buy parts from this place. It's as if they don't know anything about skateboards.
On a more positive note,
The people who work at Rock Zone are very nice. They aren't very good at putting skateboards together, but the customer service is great. This place has a great selection of good quality  pipes. But do not buy parts for your board from this place.