The FRT-MR3™ (Flat) is a duty-grade forced reset trigger kit for HK MR223 and HK MR556 platforms. This drop-in upgrade features a 3-position selector (Safe/Semi/FRT®) with ambidextrous safety and includes anti-walk pins for secure installation. Machined from US-sourced steel, it accelerates follow-up shots while maintaining reliability.
Rare Breed Triggers builds combat-proven components trusted by professional end users. Kit includes:
- 1 FRT-MR3 trigger
- 2 anti-walk pins
- 4 anti-walk pin screws
- A1/A4 selector drums
- Selector lever roll pins
- T10 tool
Pair this custom FRT kit with our precision slide work for a complete performance build.
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