You need at least 4 mags and a truck load of pellets and co2. They are fun guns to shoot. I have a red dot on mine.
Sounds like a ton of fun! I have been having a hard time convincing my wife airguns are fun. She liked my PP700 pistol, but it's a single shot. She enjoys the trigger on the P-17, but I cock/load it, she shoots it. She doesn't think CO2 is the way to go Now, she is fond of any gun as long as it has that S&W logo (she loves her M&P powderburners), so... Would you consider this a good choice for somebody into the M&P series? I'd say yes, but the voice of experience carries more weight.