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

Rare Breed delivers a precision-engineered upgrade for your roller-delayed platform. The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is designed for shooters who demand reliable, repeatable performance. This trigger system integrates a forced-reset mechanism with a selectable three-position safety, providing distinct control over your firing cycle. Built to drop into your HK-pattern firearm without permanent modification, this component is a direct result of Rare Breed’s commitment to functional firearm technology.

Overview

The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is a purpose-built trigger system that operates on a two-stage forced-reset principle. This design allows the trigger to reset forward under spring tension after each shot, requiring the shooter to release pressure before the next cycle can begin. The ambidextrous safety selector offers three distinct positions: Safe, Semi-Automatic, and Forced Reset. Each position provides tactile and audible feedback, ensuring clear shooter awareness. This trigger is manufactured to Rare Breed’s specifications for the HK MP5, MP5K, SP5, and SP5K platforms, offering a direct replacement for the factory trigger pack.

Features & Specs

• Two-Stage Forced Reset Mechanism: This system uses a mechanical forced-reset function that returns the trigger to the forward position automatically after each discharge. The shooter must release the trigger to reset the sear, then pull again for the next shot. This design provides a consistent, repeatable pull cycle without the need for a binary or full-auto function.
• Ambi 3-Position Selector: The ambidextrous safety selector features three distinct positions: Safe (blocks trigger movement), Semi-Automatic (standard single-shot per trigger pull), and Forced Reset (enables the forced-reset cycle). The selector is reversible for left-handed shooters and provides positive detent engagement.
• Drop-In Fitment: The FRT-RD3 is designed as a direct drop-in replacement for the factory trigger pack in HK MP5, MP5K, SP5, and SP5K models. No modification to the receiver or bolt carrier group is required. Installation follows standard trigger pack removal procedures. Includes all necessary springs and pins.

Who It Is For

This trigger system is intended for experienced shooters who own an HK MP5, MP5K, SP5, or SP5K and seek a precise, repeatable shooting experience. It is suited for those who understand mechanical trigger systems and are comfortable with the forced-reset action. The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is not a binary trigger or a full-auto device; it requires deliberate shooter input for each cycle. This product is for legal firearm owners who comply with all applicable federal, state, and local laws regarding trigger components. It is not recommended for first-time shooters or those unfamiliar with forced-reset trigger systems.

Shipping & FFL

This product ships directly to your residential or business address. No Federal Firearms License (FFL) transfer is required for this trigger component as it is not a firearm receiver or a regulated complete firearm. However, you must ensure compliance with all local, state, and federal laws regarding the possession and installation of firearm components. Some jurisdictions restrict or prohibit forced-reset triggers or three-position selectors. It is your sole responsibility to verify that this product is legal to own and use in your location before purchasing. Rare Breed and the retailer are not responsible for any legal consequences resulting from non-compliance.