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

Designed exclusively for the HK MR223 and MR556 platform, the FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger from Rare Breed represents a significant advancement in trigger technology. This drop-in unit provides the shooter with a distinct mechanical advantage by utilizing a forced-reset function that returns the trigger forward immediately after each shot, enabling rapid follow-up shots without modifying the firearm’s internal operating system. Built to the exacting tolerances required for HK pattern rifles, this trigger maintains the reliability and safety standards expected by serious shooters.

Overview

The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a precision-engineered component that replaces your factory trigger assembly with no permanent modifications. It features three distinct selector positions: Safe, Semi-Automatic, and Forced Reset. In the forced reset position, the trigger mechanism mechanically resets the trigger forward after each discharge, allowing the shooter to achieve a high cyclic rate while maintaining positive control. The flat trigger shoe design provides a consistent finger placement and a clean, crisp single-stage pull weight optimized for speed and accuracy. This is a direct fit for HK MR223 and MR556 lower receivers.

Features & Specs

• Three-Position Selector: Safe, Semi-Automatic, and Forced Reset modes allow the shooter to choose the operating method appropriate for their training or competition needs. The forced reset position activates the mechanical reset function.
• Flat Trigger Shoe: The flat, serrated trigger shoe provides a stable and repeatable finger interface, reducing trigger slip and promoting consistent pull geometry across all shooting positions.
• Single-Stage Design: A single-stage trigger with a crisp break and short reset travel delivers predictable performance for rapid fire sequences. The pull weight is factory set for optimal function with the forced reset mechanism.
• Drop-In Installation: No gunsmithing required. The FRT-MR3™ installs directly into the factory trigger pocket of your HK MR223 or MR556 lower receiver using standard roll pins.
• Manufacturer Specifications: Built by Rare Breed, a trusted name in the firearms industry, this trigger is constructed from heat-treated steel and precision-machined components for long-term durability under high-round-count use.

Who It’s For

This trigger is intended for experienced shooters who own an HK MR223 or MR556 rifle and demand enhanced performance from their platform. It is ideal for competitive shooters participating in outlaw matches or speed shooting disciplines where trigger manipulation speed is critical. Law enforcement and tactical professionals who train with HK-pattern rifles will appreciate the mechanical consistency and repeatability offered by the forced reset function. The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is also suited for serious firearms enthusiasts who want to explore the capabilities of their rifle within legal parameters. This product is not recommended for novice shooters or those unfamiliar with forced reset trigger operation.

• HK MR223 and MR556 rifle owners seeking a performance upgrade.
• Competitive shooters requiring fast, repeatable trigger resets.
• Informed consumers who understand the operation and maintenance of advanced trigger systems.

Shipping & FFL

This item ships directly to your doorstep. No FFL transfer is required for this product as it is a firearm component and not a firearm frame or receiver. However, you must ensure that installation of this trigger complies with all applicable federal, state, and local laws. It is your responsibility to verify legality in your jurisdiction before purchasing. This product is sold as a firearm part and the buyer assumes all responsibility for compliance with current regulations. Rare Breed triggers are intended for lawful purposes only.

• Ships direct to your shipping address.
• No FFL transfer fee applies.
• Check local laws before ordering.