Description

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

If you have spent any time behind an HK roller-delayed platform, you know the trigger is often the limiting factor. The factory pack is reliable, sure, but it is not exactly built for speed. That is where the FRT-RD3 (ambi) two-stage (3-position) forced reset trigger for the HK MP5, MP5K, SP5 & SP5K steps in. This is Rare Breed taking their proven forced reset design and miniaturizing it to fit the narrow HK trigger housing. It gives you three distinct positions safe, semi-automatic, and forced reset mode without modifying your bolt carrier group or lower receiver.

Overview

The FRT-RD3 is a drop-in trigger pack engineered specifically for the MP5, MP5K, SP5, and SP5K. It replaces the entire factory trigger group and uses a two-stage pull in forced reset mode. The first stage takes up the slack; the second stage breaks cleanly. Because the trigger resets forward automatically after each shot, your finger stays in contact with the shoe. You do not have to wait for a mechanical reset you just ride the trigger back and forth. This unit is fully ambidextrous, with both the selector lever and bolt catch accessible from either side of the receiver.

Features & Specs

• Three-position ambidextrous selector safe, semi-auto, and forced reset mode. No permanent modifications to the host firearm required.
• Two-stage trigger pull in forced reset mode. The first stage is approximately 2.5 pounds, and the second stage breaks around 4 pounds. In semi-auto mode, it functions as a standard single-stage trigger.
• Hardened steel internal components with a black nitride finish. The housing is CNC-machined 7075 aluminum. Designed to withstand sustained firing without degradation.

The FRT-RD3 (ambi) two-stage (3-position) forced reset trigger for the HK MP5, MP5K, SP5 & SP5K uses the factory trigger housing pins and does not require any special tools for installation. It works with standard MP5 bolt carriers and does not require a lightweight or skeletonized bolt. The trigger shoe has a slight curve and a textured face to prevent your finger from slipping during rapid strings.

• Manufacturer: Rare Breed
• Category: Triggers
• Compatibility: HK MP5, MP5K, SP5, SP5K (also fits clones with standard HK trigger pack dimensions)
• Materials: 7075 aluminum housing, hardened steel sear and hammer, black nitride finish
• Weight: 4.2 ounces

Who It’s For

This trigger is for shooters who want to push the cyclic rate of their roller-delayed gun without converting to a registered lower or installing a lightning link. It is useful for competition shooters running PCC divisions that allow forced reset triggers, for range enthusiasts who enjoy bump-firing with control, and for collectors who want a modern upgrade that retains the classic HK silhouette. If you already own an SP5 or MP5 clone and you have been looking for a way to make it run faster without sacrificing reliability, this is the part you have been searching for.

• No modifications to the bolt carrier, ejector, or lower receiver shell.
• Works with both paddle release and button release magazine catches.
• Fits standard HK trigger housings without filing or fitting.

Shipping & FFL

This trigger is classified as a firearm component and does not require transfer through a Federal Firearms License (FFL) dealer. It can be shipped directly to your door in all states where forced reset triggers are legal. However, you are responsible for understanding and complying with your state and local laws regarding forced reset trigger ownership. Some states and municipalities have restrictions on triggers that increase rate of fire. We recommend verifying legality with your local law enforcement or attorney before placing an order. Rare Breed triggers are not covered by any warranty for unauthorized modifications or installation errors.