Description

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

Precision engineering meets advanced fire control with the FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K. Designed and manufactured by Rare Breed, this drop-in trigger system redefines the operational envelope of roller-delayed blowback platforms. The FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K integrates a mechanical forced-reset mechanism within a two-stage, three-position selector configuration, providing the shooter with a decisive tactical advantage. Built to the exacting standards of Rare Breed’s product line, this trigger assembly delivers consistent, repeatable performance across all compatible HK-pattern firearms.

Overview

The FRT-RD3™ (SEF) trigger is a purpose-built fire control system that replaces the factory trigger pack in HK MP5, MP5K, SP5, and SP5K models. It operates on a two-stage pull with a defined wall and crisp break, while the integrated forced-reset function mechanically returns the trigger forward after each shot, enabling a rapid cyclic rate controlled by the shooter’s trigger finger. The three-position selector (Safe, Semi, Forced Reset) provides clear, tactile mode selection. Rare Breed’s engineering ensures that the FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K remains fully compliant with current ATF classifications while delivering performance that meets the demands of serious shooters.

Features & Specs

• Manufacturer: Rare Breed. Category: Triggers. Precision-machined from billet steel and aluminum components with a corrosion-resistant finish.
• Two-stage trigger pull: first stage take-up with a defined second stage wall, followed by a clean break; forced-reset mechanism re-engages the sear automatically upon bolt return.
• Three-position selector: Safe (blocked), Semi (standard semi-automatic), and Forced Reset (mechanical reset cycling). Compatible with HK MP5, MP5K, SP5, and SP5K lower receivers.

The FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K features a drop-in design that requires no permanent modification to the host firearm. All internal springs, pins, and selector components are included for a complete installation. The system is engineered to maintain the original safety function in the Safe position while providing a distinct, repeatable trigger reset that is audible and tactile. Each unit is test-fired at the Rare Breed facility before shipment.

Who It's For

This trigger is intended for experienced shooters and firearms enthusiasts who own HK MP5, MP5K, SP5, or SP5K platforms and seek enhanced trigger performance beyond standard factory specifications. It is suited for competition shooters requiring rapid follow-up shots with predictable trigger behavior, as well as collectors and hobbyists who appreciate mechanical innovation in fire control design. The FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is also appropriate for law enforcement and security personnel who train with these platforms and demand consistent, high-performance trigger mechanics. Users should have a working understanding of forced-reset trigger operation and be familiar with their local and state laws regarding trigger mechanisms.

Shipping & FFL

This product is classified as a firearm component and will ship directly to your address. No Federal Firearms License (FFL) transfer is required for shipment to the end user in most states. However, purchasers must comply with all applicable federal, state, and local laws. Some states and municipalities may impose restrictions on forced-reset triggers or three-position selectors. It is the sole responsibility of the buyer to verify legality prior to purchase. Rare Breed triggers are sold as mechanical parts and are not intended for illegal use. By purchasing the FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K, you confirm that you are legally eligible to own this component and that you will use it in compliance with all laws.