I saw a photo online (LINK) and I really want to build an AR that looks like that. Maybe not with the suppressor or the IR laser, but everything else. I really like the quad-rail out to threads of the barrel - would like to know what I need to do that! I saw this: http://www.bravocompanyusa.com/Daniel-Defense-AR15-M4A1-RIS-II-Handguard-p/dd 8001 fde.htm and yeah, there is no way I am going to spend $380+ on a rail system. So, is it possible to do that for a lower price? I've only built one AR15, so I am a newbie at all the different parts I can buy -- any tips?