Apex Tactical Specialties just announced the introduction and immediate availability of a mounting plate for the FN 509 Tactical model pistols. Designed specifically to fit the FN Low Profile ...

By removing a detachable cover plate, the FN 509 Tactical's slide mounting cut is compatible with several different brands of micro red-dot optics.

The FN 509 MRD-LE proved itself a comfortable, ... an ambidextrous slide release and weighs about 27 ounces. ... The tool for removing the cover plate from the mounting flat was provided.