Description

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 from Rare Breed. Designed exclusively for the HK MR223 and MR556 platforms, this trigger leverages a forced-reset mechanism that returns the trigger forward under recoil, enabling rapid follow-up shots while maintaining single-shot accountability. The three-position selector provides safe, semi-automatic, and forced-reset modes, giving the operator direct control over firing cadence. Manufactured in the United States, the FRT-MR3™ is built to withstand the high-pressure operating environment of the HK gas-piston system without compromising reliability or trigger feel.

Features & Specs

This FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is a complete drop-in assembly that requires no permanent modification to your lower receiver. It uses a single-stage break with a crisp, repeatable pull weight calibrated for the forced-reset cycle.

• Three-position selector: safe, semi-automatic, and forced-reset mode (FRT position)
• Single-stage trigger with forced-reset functionality; trigger resets forward during recoil impulse
• Drop-in design; no gunsmithing required for installation in HK MR223 or MR556 lower receivers
• Manufacturer: Rare Breed | Category: Triggers | Platform-specific to HK MR223 and MR556
• Constructed from heat-treated steel and billet aluminum components; Mil-Spec hammer and sear surfaces
• Includes all necessary pins, springs, and selector; compatible with standard HK trigger housings

Who It’s For

The FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is intended for shooters who demand a higher rate of fire while retaining the legal definition of a semi-automatic trigger. It is suited for competitive shooters in divisions that allow binary or forced-reset mechanisms, as well as experienced firearm owners who understand trigger discipline and recoil management. This trigger is not recommended for novice shooters or for use in restricted jurisdictions where forced-reset triggers are prohibited. Operators should verify local, state, and federal laws before purchase. The FRT-MR3™ is a mechanical component that requires proper installation and function checking by a qualified armorer.

• Experienced HK MR223 / MR556 owners seeking a non-standard trigger interface
• Competitors in disciplines permitting forced-reset or binary-style triggers
• Shooters who prioritize trigger reset speed and consistent single-stage pull weight

Shipping & FFL

This FRT-MR3™ Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 & HK MR556 is classified as a firearm component and does not require transfer through a Federal Firearms License (FFL) for shipment to most states. However, due to the regulatory status of forced-reset triggers in certain jurisdictions, we require all purchasers to confirm that the item is legal in their state, county, and municipality. Rare Breed and our company assume no liability for non-compliance with local laws. Standard shipping rates apply; expedited shipping is available at checkout. All sales are final on opened or installed trigger packs. If you have questions regarding your state’s restrictions on the FRT-MR3™, please contact our compliance team before placing an order.

• Ships directly to your residential or business address (no FFL required in most states)
• Buyer is solely responsible for verifying legality of forced-reset triggers in their jurisdiction
• Restricted states and localities: check current regulations for CA, NY, NJ, MA, CT, HI, DC, and others
• FFL transfer disclaimer: This product is not a firearm and does not require an FFL transfer under federal law, but local ordinances may apply. By purchasing, you certify compliance with all applicable laws.