Description

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

Overview

The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K represents a significant evolution in trigger control for the roller-delayed platform. Manufactured by Rare Breed, this unit is engineered specifically for single-axis ejector (SEF) housings found in HK MP5, MP5K, SP5, and SP5K models. The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K delivers a two-stage pull with a distinct wall, followed by a forced-reset mechanism that returns the trigger forward immediately after each shot. This design allows the shooter to maintain consistent finger placement while the trigger resets automatically, reducing the need for conscious trigger manipulation during rapid fire. The three-position selector provides safe, semi-automatic, and the forced-reset mode, giving operators full control over their rate of fire.

Features & Specs

• Manufacturer: Rare Breed. Category: Triggers. Designed exclusively for HK MP5, MP5K, SP5, and SP5K platforms with SEF trigger housings.
• Two-stage trigger pull with a defined take-up and a crisp break point. The forced-reset mechanism returns the trigger forward after each discharge without requiring manual release.
• Three-position selector: safe (position 1), semi-automatic (position 2), and forced-reset mode (position 3). Drop-in installation into factory SEF housings with no permanent modification required.

The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K uses a hammer-forged steel fire control group with hardened internal components. The unit is designed to function with standard 9mm ammunition and maintains compatibility with factory safety selectors. Each trigger is test-fired before shipment to ensure proper timing and engagement. The forced-reset mechanism operates independently of the bolt carrier group, relying on a spring-loaded lever that re-engages the sear as the trigger moves forward. This system reduces the total trigger travel required between shots, allowing for faster follow-up rounds while maintaining a positive reset feel.

Who It’s For

This trigger is intended for experienced shooters who own HK MP5, MP5K, SP5, or SP5K rifles and understand the mechanics of forced-reset systems. It suits competitive shooters in disciplines that allow binary or reset-type triggers, as well as enthusiasts who want to maximize the cyclic potential of their roller-delayed platform. The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is not a binary trigger; it uses a different mechanical principle that requires deliberate trigger control. Users should be familiar with their local, state, and federal laws regarding trigger modifications before purchase. This product is not designed for law enforcement or military duty use. It is a specialized aftermarket component for range and competition applications.

Shipping & FFL

This item ships directly to your doorstep. No Federal Firearms License (FFL) transfer is required for this trigger because it is a firearm component, not a firearm receiver or frame. However, you must comply with all applicable federal, state, and local laws regarding the installation and use of forced-reset triggers. Some jurisdictions restrict or prohibit the possession or use of such devices. It is your responsibility to verify legality in your area before ordering. Rare Breed products are manufactured in the United States and meet all current ATF guidelines for non-licensed components. We recommend consulting with a qualified firearms attorney if you have questions about compliance. Standard shipping rates apply. Estimated delivery time is 5-10 business days within the continental United States.