They do not sell pmags, they sell ProMags. Every Academy gets trucks. I was told there big trucks usually come on Friday because they get stocked for the weekend. And supposidly the Academy on 240 gets the most stuff in because that's the store that sells the most firearms.
They get DPMS, Bushmaster, Sig, Core15, Remington, and Wydham. I was told they also get Colts but I have never seen one. Prices range from $899 - $1500.