Description

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

The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a precision-engineered drop-in upgrade designed for shooters who demand reliability and performance from their HK-platform rifles. Manufactured by Rare Breed, this trigger system leverages the proven forced-reset mechanism to deliver rapid, consistent shot cycles without compromising control. Built specifically for the HK MR223 and HK MR556 platforms, the FRT-MR3™ offers a dedicated solution for operators and enthusiasts seeking a distinct trigger response.

Overview

The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 represents a significant advancement in aftermarket trigger technology. Unlike conventional triggers, the forced-reset design mechanically returns the trigger forward after each shot, enabling a faster follow-up cadence that is both deliberate and repeatable. The flat, single-stage shoe provides a consistent pull weight and a crisp break, while the three-position selector offers safe, semi-automatic, and forced-reset modes. Every unit is built to Rare Breed’s exacting tolerances, ensuring seamless compatibility with the HK MR223 and MR556 lower receivers without the need for permanent modification.

Features & Specs

• Three-position selector: safe, semi-automatic, and forced-reset (FRT) mode engineered for the HK MR223 and MR556 platforms
• Flat single-stage trigger shoe reduces finger travel variance and promotes consistent trigger placement
• Drop-in design with no permanent alterations required to the factory lower receiver
• Manufactured by Rare Breed, a trusted name in forced-reset trigger innovation

The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is precision-machined from billet steel and aluminum components, with a corrosion-resistant finish that withstands harsh field conditions. The trigger mechanism is self-contained within a compact housing, simplifying installation and maintenance. Each unit is factory-tested to ensure consistent reset timing and reliable function across a range of ammunition types.

Who It’s For

This trigger is designed for experienced shooters who own an HK MR223 or HK MR556 and desire a higher level of engagement from their rifle. It is suited for competitive shooters seeking faster splits in timed events, training professionals who need repeatable trigger performance under stress, and enthusiasts who appreciate mechanical precision. The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is not recommended for novice users or those unfamiliar with forced-reset trigger mechanics. Proper training and adherence to safe handling practices are essential. This product is intended for legal use in compliance with all applicable federal, state, and local laws.

• Owners of HK MR223 or HK MR556 rifles seeking a dedicated drop-in trigger upgrade
• Competitive shooters and training professionals requiring rapid, repeatable trigger resets
• Enthusiasts who value billet construction and precision engineering from Rare Breed

Shipping & FFL

This item is classified as a firearm component and may be shipped directly to residential addresses where permitted by law. However, customers purchasing the FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 must comply with all federal, state, and local regulations regarding trigger group ownership and installation. Some jurisdictions restrict the possession or use of forced-reset triggers. It is the buyer’s sole responsibility to verify legality prior to purchase. Rare Breed triggers are not controlled under the National Firearms Act (NFA) when used as intended, but regulatory status may vary. No FFL transfer is required for this component in most states, but customers should confirm local statutes. This product is sold as a drop-in trigger assembly only; Rare Breed and the retailer assume no liability for misuse or improper installation.

• Most orders ship within 1-3 business days via insured carrier
• No FFL transfer required in states where this trigger is legal to own
• Customer responsible for verifying local and state compliance before ordering