Geissele Automatics Hi-Speed National Match Two Stage AR-15 Trigger Set - .170" Large Pin

Overview

The Geissele Automatics Hi-Speed National Match Two-Stage Trigger Set is a fully adjustable trigger system designed for competition, hunting, tactical, and military applications where precision and reliability are critical. Featuring a curved trigger bow, this large-pin variant is specifically engineered to fit Colt AR-15 lower receivers with large .170-inch trigger pins produced between 1990 and 2009 (not compatible with standard MIL-SPEC receivers). The kit includes one trigger assembly along with three interchangeable spring sets—Service, DMR, and Match—allowing the user to tune the first and second stage weight distribution, over-travel, and sear engagement. The Service spring set meets CMP National Match criteria with a 4.5 lbs minimum pull weight and a crisp second-stage break. The DMR spring set offers a slightly heavier second-stage weight for high-stress tactical roles, while the Match spring set permits exceptionally low pull weights and fast lock times for specialized long-range competition rifles while retaining a full-power hammer spring for consistent primer ignition.

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