Graflex boresight systems are designed to provide the ultimate in performance, reliability, flexibility, and value. A field adjustable reticle allows for an unmatched accuracy range of ± .02 mils and immediate compensation for worn gun tubes and all environmental factors. The large objective provides superior light passage and high resolution in the most undesirable overcast conditions. Magnifications of 8X, 10X, and 12X further enhance capability and match most modern fire control systems. Nitrogen purged and sealed optical cells, aluminum and stainless steel construction, a mil specified and proven design all lend to years of trouble-free reliability and performance. The telescopes interface will smaller caliber adapters (thru 40mm) via integral 5.56mm and 7.62mm stems while large caliper designs include a permanent telescope interface. Graflex adapters are mechanically perfect and inherently locate the exact mechanical centerline axis of even the most worn gun tubes. The Graflex video boresight system (BCA) adds a new dimension in boresighting with a patented approach unrivaled by the competition.