Those look like standard coil nailers to me. The magazine on roofing nailers typically isn't that deep due to the use of shorter roofing nails. But barring model numbers or better pictures, it's all guesswork. They can say "ROOFING" 63 times in the ad, but it's Craigslist - there's a better than average chance they are wrong.
p.s. looks like a NV83A2 decking nailer.