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Radian ACC001 Vertex Single-Stage Trigger with curved-faced bow; 3.5–4 lb break; AR-15 compatible; also known as ACC-0016 (SKU ACC0016) per alternate record; bow 1144 carbon steel, hammer S7 tool steel, aluminum housing.
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A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral explanation of how single-stage and two-stage AR-15 triggers differ in feel, control, and use cases, plus how pull weight and shoe shape affect ergonomics.
5 min read