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Holosun AEMS Core X2 Red Dot Sight in black with green 2 MOA dot. Improves accuracy through an advanced optical system that reduces parallax by 50%. Features a four-post, lower 1/3 co-witness mount and remains backwards compatible with original AEMS mounts.
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An analysis of AR-15 optic mounting heights, how height-over-bore affects zero offset and holdovers, and the tradeoffs between absolute co-witness, lower-third, and taller mounts.
6 min read
Guide
A high-level overview of the main optic categories, explaining tradeoffs between speed, versatility, and precision for AR-15 builds.
7 min read