Description

FRT-RD3 (AMBI) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K

The FRT-RD3 (AMBI) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K represents a significant evolution in trigger system design for roller-delayed blowback platforms. Engineered by Rare Breed, this drop-in assembly converts your HK-pattern firearm into a three-position system that combines a standard semi-automatic first stage with a forced-reset second stage and a safe position. The ambidextrous selector allows for immediate mode changes without altering your grip, making it a direct upgrade for operators, competitive shooters, and serious enthusiasts who demand precise trigger control under rapid fire.

Overview

This forced reset trigger is purpose-built for the HK MP5, MP5K, SP5, and SP5K. Unlike standard triggers that rely on a traditional reset, the FRT-RD3 (AMBI) uses a mechanical cam that physically resets the trigger forward after each shot, enabling a faster cyclic rate while maintaining semi-automatic compliance. The three-position selector provides safe, semi-automatic, and forced-reset modes. The ambidextrous configuration ensures left- and right-handed shooters retain full control. Manufactured in the United States by Rare Breed, this trigger meets the demands of high-volume use without sacrificing reliability.

Features and Specs

• Three-position ambidextrous selector: Safe, semi-automatic, and forced-reset mode. The ambi lever allows instant mode changes from either side of the receiver.
• Two-stage forced-reset design: First stage provides a crisp take-up; second stage forces the trigger forward after the hammer falls, enabling rapid follow-up shots while remaining a semi-automatic system.
• Drop-in installation: No permanent modifications to the firearm required. Installs directly into factory HK MP5, MP5K, SP5, and SP5K lower receivers using standard pins.
• Rare Breed manufacturing: Built from heat-treated steel components with a corrosion-resistant finish. Tested for consistent performance across thousands of rounds.
• Compatibility: Fits MP5, MP5K, SP5, and SP5K models. Does not require aftermarket trigger housings or modified hammer springs.

Who It Is For

The FRT-RD3 (AMBI) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K is designed for shooters who require a tactical advantage in speed and control. Competitive shooters will benefit from the forced-reset mode during stage runs where rapid, accurate shot placement is critical. Law enforcement and security professionals operating HK-platform carbines gain a trigger that reduces split times without compromising safety. Enthusiasts who train extensively with their SP5 or MP5 will appreciate the ambidextrous controls and the ability to switch between standard semi-automatic and forced-reset modes depending on the drill. This trigger is not intended for casual plinking; it is a precision component for shooters who understand the mechanics of forced-reset systems and demand consistent performance under sustained use.

Shipping and FFL

This product is classified as a firearm component and is not a complete firearm. It ships directly to your door without requiring transfer through a Federal Firearms License (FFL) dealer. However, you must comply with all applicable federal, state, and local laws. Some states and localities restrict the possession or use of forced-reset triggers. It is your responsibility to verify that this product is legal in your jurisdiction before ordering. Rare Breed Triggers and the retailer assume no liability for non-compliance. Standard shipping rates apply. Orders typically process within 1-2 business days. Signature may be required upon delivery. No returns or exchanges on installed or modified trigger units.