Description

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

Overview

If you own an HK MP5, MP5K, SP5, or SP5K and you have been searching for a trigger that delivers a distinct shooting experience, you have landed in the right place. The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger is engineered by Rare Breed to give you a crisp, predictable two-stage pull with the added capability of a forced-reset function. This is not a typical drop-in trigger. It works with your firearm’s standard lower configuration and provides a tactile, positive reset that allows you to stay on target between shots. The three-position selector offers safe, semi-automatic, and forced-reset modes, giving you direct control over your firing cadence. Whether you are running drills or just enjoying a range day, this trigger changes how you interact with your roller-delayed platform.

Features & Specs

Rare Breed built this trigger with the enthusiast in mind, focusing on durability and repeatable performance. The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K uses a two-stage design that breaks cleanly, with a short reset that lets you fire again without fully releasing the trigger. The forced-reset function uses the firearm’s recoil energy to push the trigger forward, enabling rapid follow-up shots without modifying your lower receiver. It is compatible with SEF (Squeeze, Easy, Fire) grip housings, which are standard on many MP5-style rifles and pistols.

• Three-position selector: safe, semi-automatic, and forced-reset mode
• Two-stage trigger pull with a distinct wall and crisp break
• Drop-in design for SEF housing; no permanent modifications to your firearm required

• Manufactured by Rare Breed in the United States from heat-treated steel components
• Compatible with HK MP5, MP5K, SP5, and SP5K models using standard SEF lower parts
• Positive reset reduces trigger travel between shots, keeping your sight picture steady

• Rigorous factory testing to ensure consistent forced-reset function across varied ammunition
• Installation requires basic armorer knowledge; detailed instructions included
• Backed by Rare Breed’s warranty against manufacturing defects

Who It’s For

This trigger is for the shooter who wants to push their MP5-platform firearm beyond standard semi-automatic performance without crossing into fully automatic territory. It suits competitive shooters looking for faster split times, hobbyists who enjoy tinkering with their build, and collectors who want a period-correct SEF trigger pack with modern internals. If you already run an HK SP5 for home defense or range use and want a trigger that gives you a consistent two-stage feel with an aggressive reset option, this is a straightforward upgrade. The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is not a gimmick; it is a tool designed for shooters who understand the mechanics of their firearm and want to optimize their rate of fire legally and safely. Before purchasing, confirm that your lower receiver uses the SEF pattern, as this trigger will not fit Navy or other grip housing variants without additional parts.

Shipping & FFL

This trigger is classified as a firearm component and ships directly to your doorstep if your state and local laws permit. No Federal Firearms License (FFL) transfer is required for this item since it is not the serialized receiver. However, you are solely responsible for ensuring that the FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K complies with all applicable federal, state, and local laws before placing an order. We recommend checking with your local law enforcement or attorney if you have any questions regarding forced-reset triggers in your jurisdiction. Rare Breed and our retailer do not assume liability for improper installation or use. Standard shipping rates apply, and we typically process orders within one to two business days.