A disappointing set of sights - LWRCI Skirmish Back Up Iron Sights Set

The LWRC Skirmish BUIS are marketed as (and priced) as a premium item, but offer no discernible benefit over other manufacturers' back up sights. The primary gripe is that the rear sight aperture assembly has a considerable amount of slop - about 0.5mm, which allows it to rock back and forth on the windage screw. Fit on the rail is snug and secure, as is the lockup when deploying the sight, which makes the aperture issue all the more strange. At the time of purchase, the Troy sights were not available, so the dice were rolled on the LWRC BUIS - They look nice, but I place my confidence in other brands of sights, of which Optics Planet has many.