I know I have posted a few of these things in the past but most where fan made things. So here's one for people to buy.

This one plays NES carts



The FC Mobile II takes NES Gaming to mind-blowing heights! Built upon the success of the first generation FC Mobile, the FC Mobile II merges the worlds of portable and home gaming effortlessly with, turbo-charged auto-fire buttons, wireless hand controllers and wireless gun controller, so you can play two-players at the same time with auto-firing or test your shooting skills with games such as Duck Hunt or Freedom Force.
Want to show off your gaming skills for all to see? The FC Mobile II sports a TV output connector so that you can make or break your NES experience right on your TV screen. Bring home the fun now or take it on the road with the FC Mobile II.
Features:
  • 2.5" LCD Screen - Play NES games on a 2.5 inch Active-Matrix LCD screen
  • TV-Out Capability - Share NES gaming excitement on the TV screen
  • Wireless Controllers - Play two players on the road or at home with included wireless hand controllers and wireless gun controller
  • Auto-Fire Buttons - Easy alternative to rapid button tapping
  • FC Mobile II powered by AC adapter (included) or 4 AA batteries (not included)
  • Wireless hand controller requires 2 AAA batteries per controller (not included)
  • Wireless gun controller requires 3 AAA batteries (not included)
Lnik to the site
Theres a few other things on there. But you cant buy direct, so they list a few venders of them

Glad to see it plugs into the TV as playing Duck hunt on that small screen would be very hard.