Made specifically for the SLx 'FTSM' magnifier mount (SKU: PA-SLX-FTSM), this spacer will bring the centerline of your magnifier to a 1.93" height. This riser is precision machined from durable 6061-T6 Aluminum and features the same style of hardcoat anodization to match your existing FTSM mount. It installs just like your regular magnifier spacer and includes all the necessary hardware for secure attachment.This is a necessary component if you plan on running a magnifier and FTSM mount in conjunction with a 1.93" Red Dot sight or MicroPrism.