Daniel Defense DDM4V7 5.56mm 1/7 16" complete upper. If you're looking to build a quality rifle this is the upper you need. Not only will you get quality, with Daniel Defense you get great resale value later if you ever choose to sell. IF you have any questions please stop by 895 South Wickham Rd West Melbourne FL 32904. If you are out of area please give us a call 321-728-7296. We are available Monday-Saturday 10am-6pm.