The purpose of the research is to examine the family firms HRM. As, we know that Family firms are considered the most common type of firms globally, as well as in Pakistan. Therefore, based on the AMO and Resource-Based View perspective, the researcher studied the HR Practices of Pakistani Family Firms in the textile and leather sector located at Lahore, Faisalabad, Gujranwala, and Sialkot. The survey method was used to collect data by using a questionnaire containing 56 items. A simple random sampling technique was used for data collection. The researcher received 255 responses out of that, 230 samples have used for statistical analysis. The remaining 25 samples were not considered because of the irrelevancy of the data. Results stated that HR Practices have a significant relationship with the dependent variable, which was a competitive advantage. It shows that affective organizational commitment partially mediates the relationship between HR Practices & competitive advantage. It also indicated that moderating variable, which was Familiness resources, moderate the relationship between HR Practices & Competitive advantage.