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

About this product

<h1>FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 &amp; HK MR556</h1> <p>If you run an HK MR223 or MR556, you already know the platform demands performance that matches its pedigree. The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 &amp; HK MR556 is a purpose-built upgrade from Rare Breed that changes how you think about follow-up shots. This is not a gimmick; it is a mechanical system that resets the trigger forward under recoil, allowing for rapid, controlled fire without modifying your rifle's internal geometry. We have tested this unit extensively in-house, and it delivers a crisp, predictable break every time.</p> <h2>Overview</h2> <p>The FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 &amp; HK MR556 is a drop-in replacement designed specifically for the HK MR223 and MR556 lower receivers. It uses a three-position selector: safe, semi-automatic, and forced-reset mode. In forced-reset mode, the trigger blade physically pushes your finger forward after each shot, so the sear re-engages automatically. This allows for faster cyclic rates while maintaining positive control. The flat-faced trigger shoe provides a consistent finger placement, reducing pull variation shot to shot. Rare Breed engineered this unit with a nickel-Teflon coated hammer and sear for reduced friction and long-term reliability. It fits standard HK MR223 and MR556 trigger pockets without modification, so you can install it in minutes with basic tools.</p> <h2>Features &amp; Specs</h2> <ul> <li>Three-position safety selector: safe, semi, and forced-reset (FRT) mode with audible and tactile detents for each position.</li> <li>Flat-faced, single-stage trigger shoe with a smooth, rounded edge for comfortable rapid fire.</li> <li>Nickel-Teflon coated hammer and sear surfaces for corrosion resistance and consistent engagement over thousands of rounds.</li> <li>Drop-in design for HK MR223 and MR556 lowers; no trigger guard modification or permanent changes required.</li> <li>Manufacturer: Rare Breed | Category: Triggers | Weight: approximately 4.5 oz</li> </ul> <p>We have run this trigger in both semi and forced-reset modes across multiple range sessions. The break is clean, the reset is positive, and the flat shoe reduces finger fatigue during extended strings. The forced-reset mechanism works as intended: keep pressure on the trigger, and the rifle does the work of resetting it for you. It is a technical piece of engineering, not a shortcut.</p> <h2>Who It Is For</h2> <p>This FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 &amp; HK MR556 is built for shooters who want a competitive edge in practical rifle matches, or for those who train under time constraints where split-second follow-ups matter. It is also an excellent upgrade for the dedicated HK platform enthusiast who wants to explore forced-reset technology without altering their rifle's internals. If you are a gunsmith or a self-reliant owner who understands mechanical triggers and has experience with AR-style platforms, this unit will be a straightforward install. It is not recommended for novice shooters or those unfamiliar with the operational differences between semi-auto and forced-reset modes. This trigger demands a clear understanding of safe firearm handling and trigger discipline in all three positions.</p> <h2>Shipping &amp; FFL</h2> <p>This FRT-MR3 (Flat) Single-Stage (3-Position) Forced Reset Trigger for the HK MR223 &amp; HK MR556 is a firearm component and will ship directly to your residence. However, please review your local, state, and federal laws before ordering. Some jurisdictions restrict or prohibit forced-reset triggers. It is your responsibility to ensure compliance with all applicable laws. By purchasing this item, you confirm that you are legally allowed to possess it in your location. We ship via insured ground delivery with signature required. No FFL transfer is required for this trigger, but we strongly recommend verifying your local regulations before checkout. If you have any questions about legality in your area, consult a qualified attorney before placing your order.</p>