Details
FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 If you run an HK MR223 or MR556, you already know the platform demands performance that matches its pedigree. The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a purpose-built upgrade from Rare Breed that changes how you think about follow-up shots. This is not a gimmick; it is a mechanical system that resets the trigger forward under recoil, allowing for rapid, controlled fire without modifying your rifle’s internal geometry. We have tested this unit extensively in-house, and it delivers a crisp, predictable break every time. Overview The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a drop-in replacement designed specifically for the HK MR223 and MR556 lower receivers. It uses a three-position selector: safe, semi-automatic, and forced-reset mode. In forced-reset mode, the trigger blade physically pushes your finger forward after each shot, so the sear re-engages automatically. This allows for faster cyclic rates while maintaining positive control. The flat-faced trigger shoe provides a consistent finger placement, reducing pull variation shot to shot. Rare Breed engineered this unit with a nickel-Teflon coated hammer and sear for reduced friction and long-term reliability. It fits standard HK M
