First off, welcome to the forums Mark! To answer your question, there are several here who have built of of Mega's matched receivers, and I have yet to see a complaint with regard to quality or performance. I personally have built off the matched monolithic receiver set and my rifle performs flawlessly so I will give you a rundown of how it is currently configured. MA Ten Monolithic Receiver Set - Rifle Length AR10 Buffer Tube Chrome Silicon buffer spring and standard buffer Fulton Armory Titan Lower Parts Kit Young Manufacturing chromed 308 bolt carrier Fulton Armory Titan Bolt FA Titan Barrel, 18.5"SS threaded 1:10 twist FA Titan Gas system Bennie Cooley small profile muzzle brake from JP Rifles Combat Arms Accessories UPG-16 hand grip ATC SR Gold trigger Magpul PRS stock Harris S Series bipod Larue QD bipod mount SWFA 30mm scope mount 10-40x50 scope 5-Shot Group: The Beast Itself: [img width=810 height=607]http://i43.tinypic.com/10ngxs3.jpg