Leupold STD 336R 1 piece scope base with rings

Here I have a 1-piece Leupold scope rail, comes with a pair of 1 inch scope rings already installed, I believe they are medium height

Got this in a lot, selling as I have no use for it, screw holes show slight wear.

Marked "336R" perhaps the rifle model its intended for?

$30 OBO, will ship or FTF in the GTA

Thanks for looking