Mike:

Royal double rifles come standard with the Baker extended top tang. Except for the old Scott built stuff, I've never seen a Holland sidelock DR that didn't have it. Same for disc set strikers. I imagine that they currently come standard with the articulated trigger, although you don't need it. Hold the gun properly and your trigger finger won't get smacked when firing the left. In 20 years of DR shooting, I've never had that happen, and I've never owned one with an articulated trigger.

"Serious rifles have two barrels, everything else just burns gunpowder."