Description

FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 and HK MR556

If you own an HK MR223 or MR556, you already know the platform demands precision and reliability. The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 and HK MR556 brings Rare Breed’s proven forced reset technology to your favorite HK-pattern rifle. This isn’t a gimmick—it’s a legitimate upgrade for shooters who want a faster reset without sacrificing the control of a crisp single-stage pull. Designed specifically for the MR223 and MR556, this trigger drops in with minimal hassle and delivers a tactile, predictable cycling experience that lets you stay on target through rapid strings.

Overview

The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 and HK MR556 is a direct-fit, three-position trigger system. It operates in safe, semi-automatic, and a forced-reset mode that mechanically returns the trigger forward after each shot, allowing for an incredibly fast follow-up. Rare Breed engineered this unit to work with the HK’s factory bolt carrier group and fire control pocket, so you get a seamless interface that feels natural from the first pull. The flat-faced trigger shoe provides a consistent finger placement, reducing pull variation and helping you maintain accuracy during high-speed drills.

Features and Specs

• Three-position selector: safe, semi-auto, and forced-reset mode for rapid, controlled firing sequences without modifying the host firearm’s internal geometry.
• Flat trigger shoe with a smooth, serrated face that promotes repeatable finger placement and reduces slip under recoil or gloves.
• Single-stage design with a clean break and short, tactile reset that lets you feel exactly when the trigger is ready for the next shot.
• Manufactured by Rare Breed, a brand known for durable, MIL-spec-adjacent fire control components that hold up to high-round-count use.
• Drop-in compatibility with HK MR223 and MR556 lower receivers; no permanent modification required for installation or removal.

Who It Is For

This trigger is built for the experienced shooter who already knows their HK rifle inside and out. If you run competition drills, train for defensive scenarios, or simply want to push your MR223 or MR556 to its mechanical limits, the FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 and HK MR556 gives you a distinct advantage. It is not a beginner’s part—it requires a solid understanding of trigger discipline and firearm safety to use the forced-reset mode responsibly. The flat shoe appeals to shooters who prefer a more direct, linear pull without the curved profile of a standard trigger. Whether you are a competitive three-gunner, a private instructor, or a collector who appreciates cutting-edge engineering, this trigger delivers a tactile, repeatable experience that keeps you engaged with every round downrange.

Shipping and FFL

Because the FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 and HK MR556 is a firearm component that does not include a receiver or complete lower, it ships directly to your doorstep without needing to go through a Federal Firearms License (FFL) dealer. However, please verify your state and local laws before ordering—some jurisdictions restrict forced-reset triggers or may classify them differently. We ship to all states where this item is legal, and we recommend checking with your local authority if you have any doubt. As always, it is your responsibility to comply with all applicable laws and regulations regarding the purchase, possession, and use of this product. Rare Breed triggers are intended for lawful purposes only, and we encourage safe, responsible handling at all times.