This Springer Precision mount was designed to have the strongest attachment method with the smallest footprint for your red-dot optics.  It is aluminum and hard anodized for years of long service life. This mount replaces the FACTORY plate with the rear sight in it. Last picture shows what the slide looks like when the factory plate is off. Uses factory screws to mount the plate to the slide. The 509T does not need an extra screw because of its mounting system.

Fits: SFx, SFx Rival, Rival-S, TP9 ELITE COMBAT, TP9 ELITE COMBAT EXECUTIVE

Does not fit: TP9 Elite SC, META SFT, META SFX, Dovetail only models