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 exclusively for the HK MR223 and MR556 platform. Manufactured by Rare Breed, this trigger redefines the shooter’s interface by utilizing a forced-reset mechanism that cycles the trigger forward automatically after each shot, enabling rapid follow-up shots without altering the firearm’s semi-automatic function. The three-position selector provides safe, semi-automatic, and forced-reset modes, giving the operator full control over the firing sequence. This is a direct-fit solution that requires no permanent modification to your rifle, making it an ideal upgrade for tactical shooters and competitive marksmen who demand consistency and speed from their HK-platform rifle.

Features & Specs

The FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is built to deliver reliable performance under repetitive use. Rare Breed has engineered this trigger with a single-stage break that resets automatically, reducing trigger travel and allowing for faster stringing of shots. The three-position selector operates intuitively, with a crisp, predictable pull weight in all modes. Below are the key specifications and design highlights.

• Three-position selector: safe, semi-automatic, and forced-reset mode
• Single-stage trigger with a factory-set pull weight of approximately 4.5 to 5.5 pounds
• Drop-in design; no permanent modification to lower receiver required
• Uses standard mil-spec hammer and trigger pins for easy installation
• Machined from heat-treated steel for long-term durability

• Manufacturer: Rare Breed
• Category: Triggers
• Compatibility: HK MR223 and HK MR556 only
• Weight: 2.4 ounces
• Finish: Phosphate with a black oxide coating

• Forced-reset mechanism cycles trigger forward after each shot
• Reduces perceived trigger reset travel by approximately 60%
• Tested for 10,000+ cycles without degradation
• Backed by Rare Breed’s limited lifetime warranty

Who It’s For

The FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger For The HK MR223 & HK MR556 is intended for experienced shooters who have a working understanding of trigger mechanics and firearm safety. It is suitable for those who participate in competitive shooting disciplines where split times matter, as well as for tactical trainers who require a reliable, repeatable trigger system for high-volume drills. This trigger is also appropriate for collectors and enthusiasts who want to maximize the performance of their HK MR223 or MR556 without converting the rifle to a different operating system. The FRT-MR3™ is not a training device for novice shooters; it demands familiarity with forced-reset operation and disciplined trigger control. If you own an HK MR223 or MR556 and want a trigger that delivers consistent, rapid-fire capability without compromising the rifle’s inherent reliability, this product is engineered for you.

Shipping & FFL

This FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger For The HK MR223 & HK MR556 ships directly to your doorstep. No Federal Firearms License (FFL) transfer is required for this product because it is classified as a firearm component, not a firearm frame or receiver. Rare Breed triggers are legal to ship to all states where they are not explicitly prohibited by state or local law. It is the buyer’s sole responsibility to verify that this trigger complies with all applicable federal, state, and local regulations before placing an order. We do not assume liability for purchases made in jurisdictions where this product is restricted. If you have any questions regarding your state’s laws, consult a qualified attorney or contact your local law enforcement agency before ordering. Expedited shipping options are available at checkout.