About this product

FRT-MR3™ (Flat) Single-Stage · 3-Position · Flat-Face · HK MR223 & MR556 HK MR223 HK MR556 The FRT-MR3™ (Flat) is the flat-faced evolution of the most advanced forced reset trigger available for the HK MR223 and HK MR556 . Engineered by Rare Breed Triggers , it combines three selectable positions — Safe, Semi-Auto, and Forced Reset — with a precision flat-face trigger bow t We ship to all US states — fast and discreet.

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

If you own an HK MR223 or MR556, you already know the platform demands components that match its engineering. The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 delivers exactly that. Built by Rare Breed, this trigger system redefines your shooting experience without sacrificing the reliability you expect from a premium firearm. It is not a gimmick; it is a purpose-built tool designed to give you a faster reset and a consistent pull every time.

Overview

The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 uses a forced-reset mechanism that automatically returns the trigger forward after each shot, allowing for a rapid follow-up without the need for a full manual reset. The three-position selector gives you safe, semi-automatic, and forced-reset modes. This is a drop-in unit that replaces your factory trigger group with minimal effort, and it maintains the same overall footprint as the original. Rare Breed designed this specifically for the HK MR223 and MR556, so you get a perfect fit with no modification to your lower receiver.

Features & Specs

• Single-stage design with a crisp, clean break and a short, positive reset that the shooter controls through trigger manipulation
• Three-position selector: safe, semi-automatic, and forced-reset mode for versatile use at the range or in training
• Flat trigger shoe provides a consistent finger placement and reduces fatigue during extended shooting sessions

The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is manufactured by Rare Breed, a company known for producing reliable, no-nonsense trigger systems. The unit is CNC-machined from billet steel and hard-coat anodized for durability. It is compatible only with the HK MR223 and MR556 platforms. Installation is straightforward and can be completed with basic tools, though we recommend having a qualified armorer handle it if you are not comfortable working on your firearm.

Who It’s For

This trigger is built for shooters who want to push the pace without losing accuracy. If you compete in three-gun, run tactical drills, or simply enjoy faster splits at the range, the FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 gives you a mechanical advantage that comes down to training, not hype. It is also suited for enthusiasts who appreciate the engineering behind a forced-reset system and want to experience it on a premium platform like the HK MR223 or MR556.

• Competition shooters looking for a legal, reliable way to increase their rate of fire without converting to full-auto
• HK MR223 and MR556 owners who want a trigger that matches the rifle’s build quality and performance
• Serious hobbyists who understand the mechanics of forced-reset triggers and value hands-on control over their shot cycle

Shipping & FFL

This item ships directly to your door. No FFL transfer is required for this trigger because it is a firearm component, not a receiver or complete firearm. However, you must ensure compliance with all local, state, and federal laws regarding the installation and use of aftermarket triggers. Some jurisdictions restrict forced-reset trigger systems, so check your local regulations before purchasing. We are not responsible for any legal issues arising from the use or installation of this product.