Im missing parts - Stag Arms AR-10 Stag 10 Lower Parts Kit

I need a safety selector and a grip screw I only bought this because it was the only place that had it in stock if optics planet doesn't get back to me to fix this situation I will never use there company again I paid 130 dollars for this and I shouldn't need to spend another 20 because they have shitty quality control , im the third person with this problem clearly they have a problem at the warehouse