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 represents a precision-engineered upgrade for discerning shooters. Developed by Rare Breed, this trigger system delivers a distinct mechanical advantage by forcing the trigger forward after each shot, enabling a rapid firing cycle while maintaining the legal classification of a standard semi-automatic configuration. Designed exclusively for the HK MR223 and MR556 platforms, this unit integrates a flat, single-stage shoe that provides a consistent pull weight and a crisp break, ensuring repeatable accuracy under dynamic conditions.

Overview

The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a direct replacement component that upgrades the factory fire control group. It offers three selectable positions: safe, semi-automatic, and forced reset mode. In forced reset mode, the trigger mechanically resets forward automatically following each shot, requiring the shooter to release pressure before the next engagement. This design allows for a faster cyclic rate without altering the firearm’s semi-automatic operation. Manufactured by Rare Breed, a trusted name in the firearms industry, this trigger is machined from billet steel and finished with a corrosion-resistant coating for long-term reliability.

Features & Specs

• Single-stage trigger with a flat shoe design for consistent finger placement and reduced trigger pull variation. The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 provides a pull weight of approximately 4.5 to 5.5 pounds, verified through factory testing.
• Three-position selector switch: safe, semi-automatic, and forced reset mode. The forced reset function utilizes a cam-based mechanism that pushes the trigger forward after each discharge, enabling a rapid follow-up shot cycle.
• Direct drop-in fit for HK MR223 and MR556 rifles. No permanent modifications are required. Includes all necessary pins and springs for installation. Compatible with standard lower receivers designed for the HK platform.

Who It’s For

This trigger is intended for experienced shooters who demand a competitive edge in controlled rapid-fire scenarios. It is suitable for range use, tactical training, and competition applications where split-second follow-up shots are critical. 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 mechanics. It requires a deliberate trigger control technique to maximize the reset function. Law enforcement and civilian shooters seeking a reliable, high-performance upgrade for their HK-pattern rifle will find this trigger a substantial enhancement over factory components.

Shipping & FFL

This product ships directly to your address. No Federal Firearms License (FFL) transfer is required for this trigger component as it is classified as a firearm part, not a receiver or complete firearm. However, state and local laws vary regarding trigger modifications. It is the purchaser’s sole responsibility to verify compliance with all applicable federal, state, and local regulations before ordering. Rare Breed triggers are designed for legal use in semi-automatic firearms. Do not attempt to modify this component to function in an automatic or fully automatic manner. By purchasing the FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556, you acknowledge that you are compliant with all relevant laws and will use this product only in a lawful manner.

• All trigger kits are inspected prior to shipment to ensure mechanical function and proper alignment.
• Standard shipping rates apply. Expedited options are available at checkout. No international shipping.
• Returns are accepted within 30 days of delivery for unused, unmodified items. A restocking fee may apply. Contact customer service for a return authorization number prior to shipping.