Description

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

Overview

If you run an HK roller-delayed platform, you already know the trigger is often the weak link. The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K changes that. Designed by Rare Breed, this drop-in unit gives you a legitimate three-position selector with a two-stage forced reset mechanism. It fits standard SEF (Navy-style) trigger housings, so no modification to your lower is needed. The trigger offers a crisp first stage, a distinct wall, and a second stage that resets under recoil. This is not a gimmick; it is a practical upgrade for shooters who want faster follow-ups without sacrificing control.

Features & Specs

Built for durability and repeatability, the FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K uses hardened steel internals and a reinforced hammer. The three positions are safe, semi-automatic, and forced reset. In the forced reset position, the trigger resets forward automatically after each shot, allowing you to fire as fast as you can maintain sight alignment. Rare Breed engineered this specifically for the HK roller-delayed action, so it cycles reliably with standard and +P ammunition.

• Drop-in design fits SEF (Navy-style) trigger packs for MP5, MP5K, SP5, and SP5K platforms
• Two-stage trigger with a 3-position selector: Safe, Semi, and Forced Reset
• Hardened steel components and heat-treated sear surfaces for long service life

Who It’s For

This trigger is for the serious HK enthusiast who spends time behind their gun. Whether you run an SP5 in competition, a K model in a defensive role, or an MP5 clone on the range, the FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K gives you a mechanical advantage that no aftermarket single-stage can match. It is also ideal for collectors maintaining a period-correct Navy lower who want modern performance without altering the housing. If you have ever felt that your HK trigger was holding you back during rapid strings, this is a direct solution.

• Competition shooters needing fast, controlled splits in PCC divisions
• Home defense users who want a predictable, repeatable trigger pull under stress
• HK purists who refuse to modify their original SEF lower but want updated internals

Shipping & FFL

This FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K ships directly to your door. No FFL transfer is required because it is classified as a firearm parts component, not a firearm. However, you must ensure compliance with all state and local laws regarding forced reset triggers. Some jurisdictions restrict or prohibit ownership of devices that modify a firearm’s rate of fire. By purchasing this product, you acknowledge that you are legally eligible to own it in your state, county, and municipality. Rare Breed triggers are intended for lawful use only. If you have legal questions, consult an attorney before ordering.