Primary Arms SLx Micro Prism, Sight, 23MM Objective, 1X Magnification, Red Partial Illuminated ACSS Cyclops Gen 2 Reticle, Fits Mini-ACOG Mount, Black PA-SLX-1XMP-CYCLOPS The SLx 1x MicroPrism is an advanced optical system designed from the ground up in an ultra-compact housing, allowing use of backup iron sights and magnifiers.