Description

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

Overview

The FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a precision-engineered drop-in trigger system designed specifically for the HK MR223 and HK MR556 platform. Manufactured by Rare Breed, this trigger leverages a patented forced-reset mechanism that returns the trigger forward under recoil impulse, enabling rapid follow-up shots while maintaining shooter control. Unlike traditional binary or full-auto systems, the FRT-MR3™ operates within a three-position selector: Safe, Semi-Automatic, and Forced Reset. The trigger utilizes a single-stage pull with a crisp break and a consistent reset point, built to withstand the high-pressure environment of the MR223/MR556 gas system. Every unit is machined from billet steel and heat-treated for durability, with all internal components coated in a corrosion-resistant finish.

Features & Specs

• Three-position selector: Safe, Semi-Automatic, and Forced Reset mode (FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556)
• Single-stage trigger pull with a factory-set break weight of approximately 4.5 to 5.5 pounds; no take-up or creep in forced reset mode
• Drop-in design requiring no permanent modification to the HK MR223 or HK MR556 lower receiver; uses factory hammer and disconnector geometry
• Billet steel construction with black nitride finish; all springs are chrome-silicon for extended service life
• Positive mechanical reset: trigger must release fully before next cycle; no binary or burst functionality

The FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is compatible with factory HK MR223 and MR556 bolt carriers, fire control pockets, and safety selectors. The trigger housing uses standard HK trigger pin dimensions. Rare Breed recommends using factory or factory-spec ammunition for consistent forced reset performance.

Who It’s For

This trigger is intended for experienced shooters who own an HK MR223 or HK MR556 and seek a legally compliant, mechanical forced-reset trigger system that does not convert the firearm to full-automatic operation. The FRT-MR3™ is designed for competitive shooters in practical rifle divisions, high-volume range training, and enthusiasts who demand a durable, single-stage trigger with a unique reset characteristic. It is not recommended for novice shooters or for use in rapid-fire drills without prior training on forced-reset mechanics. The three-position selector allows the shooter to switch back to standard semi-automatic operation for precision shooting or administrative handling. Law enforcement and military personnel should verify departmental policies before installation.

Shipping & FFL

This FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a firearm component, not a complete firearm, and ships directly to your address. No Federal Firearms License (FFL) transfer is required for purchase or delivery. However, you must comply with all state and local laws regarding trigger installation and use. Some states or municipalities may have restrictions on forced-reset triggers, binary triggers, or aftermarket fire control systems. It is your responsibility to verify legality before ordering. Rare Breed advises that this trigger is not approved for use in all jurisdictions; check with your local law enforcement or attorney if uncertain. We ship via UPS Ground or USPS Priority Mail with signature confirmation. Expedited shipping options are available at checkout. All sales are final; no returns or exchanges due to the mechanical nature of the product. FFL transfer disclaimer: No FFL is required for this trigger, but you must be 18 years or older to purchase. We reserve the right to cancel orders that appear to violate applicable law.