As a kid I experimented at tearing apart my mom's flash cubes to feed my grandpa's ag-1 flash holder. They worked just fine, save the ocassional one that had a trigger lead snap off too short.

I guess at age 10 I knew that a 35mm rangefinder beat an instamatic 126 any day for image quality.

You need to bend the leads to line up in the way that the real AG-1's present them, after striaghtening them to get the bulb out of the flash cube.