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 significant advancement in trigger system design for precision-oriented shooters. Manufactured by Rare Breed, this trigger redefines the interface between operator and carbine. Engineered specifically for the HK MR223 and MR556 platforms, this unit delivers a distinct mechanical advantage without sacrificing reliability or safety.

Overview

This forced reset trigger operates on a three-position selector system, providing the user with distinct modes of operation. The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 utilizes a flat-faced trigger shoe, offering a consistent and repeatable finger placement. The forced reset mechanism, a hallmark of Rare Breed engineering, ensures the trigger resets forward under spring tension after each shot. This design allows for rapid, controlled follow-up shots while maintaining the shooter’s ability to stage the trigger. The unit is a direct drop-in replacement for the factory trigger group, requiring no permanent modification to the host firearm.

Features & Specs

• Three-position selector: Safe, Semi-Automatic, and Forced Reset mode. The forced reset position engages a mechanical linkage that physically returns the trigger forward after each cycle, enabling an accelerated rate of fire while retaining single-shot functionality.
• Flat trigger shoe profile: Reduces trigger reach and provides a neutral surface for consistent finger placement. The flat geometry minimizes lateral movement and enhances control during rapid strings of fire.
• Single-stage pull weight: Factory-set at approximately 4.5 pounds with a crisp break and minimal overtravel. The forced reset feature does not alter the static pull weight in semi-automatic mode.

The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is constructed from heat-treated steel components with a corrosion-resistant finish. All internal parts are precision-machined to MIL-SPEC tolerances, ensuring compatibility with HK factory bolt carriers and hammer assemblies. The trigger is designed for use with standard 5.56x45mm NATO and .223 Remington ammunition.

• Manufacturer: Rare Breed
• Category: Triggers
• Platform compatibility: HK MR223, HK MR556
• Selector positions: 3 (Safe, Semi, Forced Reset)
• Trigger shoe: Flat, 0.30-inch width

Who It's For

This trigger is intended for experienced shooters who demand maximum performance from their HK MR223 or MR556 rifle. It is suited for competitive shooters in divisions that permit modified trigger systems, as well as for advanced recreational shooters who require a higher rate of accurate fire. The FRT-MR3™ (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is not recommended for novice shooters or for those who have not received formal training in the operation of forced reset trigger systems. Understanding the mechanical function of the forced reset mode is essential before installation.

• Compatible with standard mil-spec lower receivers and HK factory upper assemblies
• Requires no gunsmithing for installation; drop-in design with included pins
• Maintains factory safety selector functionality in all positions

Shipping & FFL

This item is classified as a firearm component and is not a completed receiver or frame. Therefore, it does not require transfer through a Federal Firearms License (FFL) dealer for shipment to most states. However, the purchaser is solely responsible for compliance with all local, state, and federal laws regarding the ownership and installation of aftermarket trigger systems. Some jurisdictions restrict or prohibit the possession of forced reset triggers. By placing an order, the buyer certifies that they are legally eligible to purchase this product and that it is legal in their jurisdiction. Rare Breed recommends consulting with a qualified firearms attorney if there is any uncertainty regarding local regulations. Standard shipping rates apply, and orders are processed within one to two business days.