Description

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

When you demand precision and enhanced cyclic control from your HK MR223 or MR556 platform, the FRT-MR3™ single-stage (3-position) forced reset trigger for the HK MR223 & HK MR556 delivers a distinct mechanical advantage. Engineered by Rare Breed, this trigger system redefines the shooting experience by providing a true forced-reset mechanism that returns the trigger forward under spring tension after each shot, allowing for rapid follow-up shots without modifying the firearm’s core operating system. For the serious rifleman who requires reliability under high-round-count conditions, the FRT-MR3™ is a purpose-built upgrade that meets the rigorous demands of the HK platform.

Overview

The FRT-MR3™ single-stage (3-position) forced reset trigger for the HK MR223 & HK MR556 is a drop-in assembly that replaces the factory trigger group with a three-position selector: safe, semi-automatic, and forced-reset mode. In forced-reset mode, the trigger resets forward automatically after each discharge, enabling the shooter to maintain a consistent firing rhythm. Rare Breed has specifically engineered this unit to interface with the HK MR223 and MR556 lower receivers, ensuring proper sear engagement and reliable function. This is not a binary trigger or a modification to the firearm’s cyclic rate; it is a mechanical trigger system that operates within the firearm’s original design parameters. Available now to authorized dealers and individual purchasers who comply with all applicable laws.

Features & Specs

• Manufactured by Rare Breed as a dedicated trigger system for the HK MR223 and HK MR556 platforms. No modification to the bolt carrier group or receiver required for installation.
• Three-position selector with distinct detents: safe (selector up), semi-automatic (selector center), and forced-reset mode (selector down). The forced-reset function uses a spring-loaded mechanism that actively pushes the trigger forward after the hammer is released.
• Single-stage trigger pull with a consistent break weight. Constructed from heat-treated steel components with a corrosion-resistant finish. Includes all necessary pins and springs for direct drop-in installation.

• Compatible exclusively with HK MR223 and HK MR556 rifles. Not intended for use with AR-15 pattern rifles or other HK models without verified compatibility testing by the manufacturer.
• Designed for semi-automatic fire control. The forced-reset function does not alter the firearm’s classification or increase its rate of fire beyond the shooter’s ability to release and re-engage the trigger.
• Each unit is serialized and individually tested by Rare Breed prior to shipment. Includes installation instructions and warranty information. Category: Triggers.

Who It’s For

The FRT-MR3™ single-stage (3-position) forced reset trigger for the HK MR223 & HK MR556 is intended for the experienced HK owner who understands the mechanics of their platform and seeks a trigger system that offers a distinct training advantage. Competitive shooters who run drills requiring rapid, controlled pairs will find the forced-reset function allows them to maintain sight alignment while executing faster split times. Law enforcement and tactical professionals who train with the MR223 or MR556 may use this trigger to simulate high-volume engagement scenarios. This product is not recommended for new shooters or those unfamiliar with forced-reset trigger operation. The buyer must be knowledgeable about their local, state, and federal regulations regarding trigger mechanisms and their installation.

Shipping & FFL

This product is classified as a firearm component and may be shipped directly to your residence if permitted by state and local laws. However, some jurisdictions require all trigger assemblies to be transferred through a Federal Firearms License (FFL) dealer. It is your responsibility to verify the legality of this item in your state, county, and municipality before placing an order. Rare Breed and this retailer will not be held liable for orders placed in restricted jurisdictions. If your state requires an FFL transfer, the item will be shipped to your chosen dealer upon receipt of a valid FFL copy. Standard shipping rates apply, and expedited options are available. All sales are final. No returns or exchanges on installed trigger components.