This guide details the installation and functionality of the DI Optical 3x Magnifier, featuring an A.R.M.S. #78 QD mount with T.I.T.S. technology. The expert-level instruction covers proper mounting on a Picatinny rail, testing the flip-to-side mechanism, checking clearance, and zeroing procedures, emphasizing safety throughout. The review highlights the magnifier's practical application during live fire drills with a .308 Winchester rifle.
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