Can someone provide me the correct Magpul part number or link to the Magpul grip that comes on model 10213?

It appears the only difference in these models are the supplied Magpul stock, grip, and rail covers that comes with the 10213. Since Cabelas has the 10208 in stock, I am thinking about getting one from them and then just changing out the grip.

it's the MOE SL grip;

MOE SL(R) Grip – AR15/M4