Hello, I have a prevan essential arms lower I just filed for a form 1. So obviously waiting awhile before I build. But I have no experience building and I'd like some recommendations on upper barrel has block etc. I'd like a 8.5" barrel. And have the can on the end that recedes into the rail. If possible somewhat match theme EA lowers "off black" grey color. I have grey furniture on it now with a clone law tac. Folder. As far as sights go I'm using a vortex uh-1 with matching 3x. Id like to get some 45° irons as well. I'd like to start a discussion on SBR build too. Thanks!