About this product

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

If you have spent any time behind an HK MR223 or MR556, you already know the platform demands precision components. The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is designed specifically for those who want a faster reset without sacrificing the control you expect from a single-stage pull. Rare Breed engineered this trigger to work with the MR-series lower geometry, so you get a drop-in fit that feels like it belongs there from the factory.

Overview

This is not a generic AR-15 trigger shoe forced into an HK pattern. Rare Breed tooled the FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 to match the pin spacing, hammer profile, and bolt carrier travel unique to the MR223 and MR556. The flat trigger shoe gives you a consistent finger placement every time, and the three-position selector lets you choose between safe, standard semi-automatic, and the forced-reset mode. In forced-reset mode, the trigger resets forward as the bolt cycles, allowing you to ride the reset and fire again quickly without the traditional wall break. It is a mechanical system, so you keep full control over each shot.

Features & Specs

• Three-position selector: safe, semi-automatic, and forced-reset mode with a crisp single-stage break
• Flat trigger shoe designed for consistent finger placement and reduced over-travel
• Drop-in design specific to HK MR223 and MR556 lower receivers, includes all necessary pins and springs

• Manufacturer: Rare Breed
• Category: Triggers
• Single-stage pull weight tuned for duty and range use
• Nickel-Teflon coated trigger and hammer surfaces for smooth, consistent feel

• Forged steel hammer and sear components for long-term durability
• All installation hardware included; no gunsmith fitting required for standard MR223 and MR556 lowers
• Backward compatible with most MR-series mil-spec safety selectors

The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 uses a mechanical forced-reset sear that re-engages the hammer as the bolt returns to battery. This means you do not need to fully release the trigger for each shot in forced-reset mode, which reduces the time between rounds while keeping each pull deliberate. The flat face helps maintain a straight rearward press, especially during rapid strings.

Who It Is For

This trigger is built for HK MR223 and MR556 owners who want to push the cyclic performance of their rifle without changing the operating system. It fits shooters who already understand forced-reset mechanics and are looking for a dedicated unit that does not require adapters or modification. Whether you run drills on a flat range, compete in two-gun matches, or just want a different trigger experience on your HK, the FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 gives you a purpose-built option. It is not a novelty part; it is a tool for shooters who want a faster trigger reset in a proven platform.

Shipping & FFL

This item is a firearm component and can be shipped directly to your door. No Federal Firearms License (FFL) transfer is required for the trigger itself. However, please check your state and local laws before ordering. Some jurisdictions restrict or prohibit forced-reset trigger systems. By purchasing the FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556, you confirm that you are legally allowed to own this component in your area. We recommend consulting with your local firearms authority if you have any questions regarding compliance.