by Primary Arms
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Primary Arms SLx 3-18x50 FFP Gen II rifle scope with illuminated ACSS HUD DMR 308 reticle. Includes SLx cantilever 30mm mount. Magnification range 3-18x with a 50mm objective. Mount height approximately 1.5 inches.
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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