Well, I upgraded my DSA upper build some with a Daniel Defense Omega Free Float rail, Put my Eotech on it, installed the Magpul ACS stock on it. Also pictured is my first AR15A2. My dad gave it to me to start my gun collection when I turned 18. It's a solid workhorse. No Idea what make upper, the lower is Essential Arms. Wanna kill these ads? We can help!