Just curious, I know a lot of folks have posted about trying various PF9 parts, especially mag springs in their DB9, but has anybody tried fitting a +1 Mag Extension for the PF9 onto a OEM DB9 Mag. From pictures, assuming it slides on firmly as a replacement to the stock mag baseplate, it looks like it would take minimal Dremel fitting of the polymer notch to make it match up or just sand the point of the mag well of the DB9 down a little. I may order one from GunMagWarehouse just to find out as I have both guns, DB9 and PF9.
I have carried both as an EDC. If they ever go for a Gen3 on the DB9, would love to see them add an accessory rail and slide catch, the two reasons I hang onto the PF9. The slide catch would be worth another ounce of weight in my opinion (clearing a FTE is way too hard without it, especially in a self defense situation on a super lightweight 9 prone to limp wrist induced FTE's), its not about weight as much as the DB9s footprint is still smaller and prints squarer (more like a wallet than like a pistol), striker fired trigger is way better than the PF9s long/heavy pull, and the quality of poly grip molding is much better on the DB too.