TackleberryMCS
Master
DS Arms is now upping their game and offering new Service Series uppers and rifles. I have used DS Arms lowers, BCGs, charging handles, and upper assemblies in the past and have nothing but good things to say about them.
https://www.dsarms.com/search.aspx?searchterm=service+series
https://www.dsarms.com/search.aspx?searchterm=service+series