From the info that I have found the big difference between these 2 fine guns is the weight 5-6 oz difference(due to the cylinder I am guessing) and the type of sites used. Am I missing any thing else.
No, that's everything. I think the PD comes with Ahrends wood grips and the NG comes with Pachmayrs. The PD feels like a toy because it ridiculously lightweight. I would think the additional weight would make it much more pleasant to shoot.
