Your picture did not come through and I was trying to figure out exactly what you were buying. so, with a little finagaling of the image code you have above... I found the following link:
http://www.tacticalinc.com/
edit: (all the direct links to the thing don't seem to work... you have to go to the main home sight and click on receivers on the left and then down to the CH22 one.) but here's what it describes:
CH22™
CHARGING HANDLE RECEIVER
FOR RUGER 10/22 & CHARGER
Now your can have the functionality and familiarity of your AR15 receiver in your Ruger 10/22 rifle or Charger pistol with our CH22 - "Charging Handle 22" Receiver. The receiver incorporates a stainless steel charging handle that operates like your AR15.