CMMG was established in 2002" when John" Jeff" Gretchen" and Stephanie Overstreet made the decision to create a quality AR rifle that can be afforded by everyone. Since that time" things have continued to get better and better. Although the nature of the business continues to evolve" one thing does not— the commitment to meet each and every morning to pray for God's wisdom in managing the enormous responsibility that comes with this business. CMMG is constantly looking for new ways to improve. This Stripped Mk3 upper receiver is no exception. Dust cover not included.