Stan,
Something was lost in translation and the translation may be 180 degrees off about convergent/divergent. It's awkwardly stated. However, I believe if you fire the rear double trigger first, it then acts as a single action trigger to fire the second barrel without reaching for the front trigger. I don't believe it is both barrels fired with one trigger pull. There a few double triggered Superposeds made to fire both barrels, one at a time, from one trigger without going to the second trigger regardless of sequence of trigger pulled. Gil
