You have to read the whole article. He successfully refutes the question of the gun at the bank, but I don't know why anyone questioned him on that in the first place. Quick research shows that is completely possible. But he does a poor job of defending his Denver Heston speech and Lockheed Martin pieces, and doesn't even go into some of the more glaring errors.
Because; The normal procedure was that you open an account, the normal background checks are done, and then one goes to a gunshop/dealer and picks up his/her rifle. In this case mm talked the bank into going along with his making it look like he opened his account and the bank hamded him the rifle then and there. Thus making it look very slipshod and insecure.