A few weeks after de-committing from South Carolina, offensive lineman Eric Mack has made it official and signed with Auburn.

The 6-foot-4, 315-pound Mack is a highly-rated prospect, a four-star recruit by both scouting services. Rivals has him as the No. 6 offensive guard, while Scout has him at No. 10.

Mack, a St. Matthews, S.C., native, was a South Carolina commit until January 20, when he backed out and committed to Auburn. He took plenty of flak from his native South Carolinians.

Here's a Scout.com report:

First thing that jumps out about Mack is how nimble he is on his feet. He moves well, especially for someone weighing 320 plus pounds. He needs to work on attacking the defensive lineman more when run blocking, but he is more than solid in pass protection. He uses his hands well, he really locks in on the defender, and he gets down field well on screens. He has nice knee bend, but he needs to be more consistent on his pad level.

And check out a video of him. He looks massive.