I found this ammo at the Lakeville Fleet Farm this morning. Pretty good deal for $164.99. And it came with a nice new ammo box too!
This is the actual description of the item:
Lake City Ammunition 5.56x45mm NATO 62 Grain XM855 SS109 Penetrator Full Metal Jacket 10 Round Clips in Ammo Can of 420 (14 Boxes of 30)