This microprism is part of Primary Arms SLx optics line. SLx optics built the reputation for innovation, reliability and value. 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. SLx optics built the Primary Arms reputation for innovation, reliability, and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment. In this case, testers put the optic through over 7,000 rounds of .308 through a SCAR 17s.Using cutting-edge LED technology, the SLx 1x MicroPrism offers 13 illumination settings with AutoLive motion-sensing on/off technology and three night vision settings. At maximum illumination, the MicroPrism offers true daylight bright performance, while the innovative low-power sleep mode safeguards battery life for reliable 'always-on'storage. Though small in size, virtually no sacrifice was made for eye relief and even offer...