This collection contains iron sights for FN pistols. LPA makes adjustable sights for the FN 502. They have screws for windage and elevation. Sight pictures are blank, fiber optic, white dots and white lines. LPA machines them from steel in Italy.
Installation
Most sights sit in a dovetail. You drift the old sight out and the new one in with a sight pusher or a punch. See Installation tools.
Yes, with a sight pusher or a punch. Drift the old sight out of the dovetail and push the new one in. If you do not have the tool, a gunsmith can do it for you. See Installation tools.
Which sights should I choose for my FN 502?
It depends on how you shoot:
You want to zero for your ammunition or shoot competition: adjustable sights. You set windage and elevation with screws.
You shoot in daylight, at the range or in competition: fiber optic.