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PRIMARY ARMS SLx 3X MicroPrism Red Raptor 5.56/.308 Yard FDE. A compact 3x microprism optic featuring a red reticle designed for AR-15 platforms chambered in 5.56 NATO or .308 Win, finished in FDE.
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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