[url=http://www.wilsoncombat.com/store.cgi?&shop=city&Category=30300]Wilson M4T[/url]
They don't really mention anything more than this:
We start with precision CNC machined 7075 T6 upper and lower receivers that are matched by hand. A master rifle-smith then carefully assembles and fits the rifle with our best-quality barrel and an outstanding JP trigger group that breaks cleanly at 3 pounds. The result is a Tactical Rifle you can stake your life on that is guaranteed to shoot 1 MOA at 100 yards with high-quality ammunition.
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That, and the name, are what you paid extra for. There isn't any reason to feel bad, you got a nice rifle. The reason people here are down on them is that most are looking for a good defensive rifle, and those requirements can be met for less money. The wilsons and les baers exceed the average expectation, and what they add isn't worth the cost to most.
So, get some ammo, and get to shootin'