The PENDULUM sights (Item#TG700 and TG701) are well suited for left-hand use.
When you flip the riser bracket, the elevation gang will be in its opposite orientation from its as shipped design. The two screws above the aperture need to be removed, so you can rotate the aperture and re-secure the two screws. The light will now be to the outside when installed for left-hand use.
1. Flip the bracket upside down.
2. Remove the screws from the top of the aperture, rotate the aperture 180 degrees and re-install the screws (do not overtighten).
3. Re-install the adjustable yardage stop.