The Leupold DeltaPoint Pro Dovetail Mount will not work with the S&W 59 Series. We currently do not have a dovetail mount for that gun.
These Leupold DeltaPoint Pro Dovetail Mount for the Smith and Wesson M&P should work for an SD9VE. This is model number 170909.
The Leupold DeltaPoint Pro Dovetail Mount might work with a Rock Island Armory 1911. However, it would depend on the type of rear dovetail your 1911 has. If it uses a Colt pattern dovetail the Colt 1911 model of the Leupold DeltaPoint Pro Dovetail Mount will work.
If you are looking to mount the Leupold DeltaPoint Pro red dot to a Ruger SR 1911 I recommend using the dovetail mount at the link below. The Ruger SR1911 uses Novak style sights and the Leupold DeltaPoint Pro Dovetail Mount won't work with those sights.
https://www.opticsplanet.com/evolution-gun-works-leupold-deltapoint-pro-sight-mount-for-novak.html
This Leupold DeltaPoint Pro Dovetail Mount will not fit your Beretta M9A4. Unfortunately, we do not carry any compatible plates for your handgun.
This Leupold DeltaPoint Pro Dovetail Mount will not fit your FN 509. However, we do carry a plate made by EGW that is compatible with with the FN 509. You can find the plate using the following link:
https://www.opticsplanet.com/evolution-gun-works-leupold-deltapoint-pro-sight-mount-for-sig-sauer-p220-p226-p.html
Yes. You gave to remove your rear sight and install the plate where the rear sight was. Then your optic will just mount directly to the plate.
This Leupold DeltaPoint Pro Dovetail Mount will not fir your PX4. Unfortunately, we do not currently carry and adapter plates for the PX4 Storm.
The Burris uses the Docter footprint while the DPP uses the Shield footprint. It would not be compatible. You would need this one: BR-RMT-SDM-1-410324
Yes, it would work on the Glock 23.