Description

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

Overview

The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K represents a significant advancement in semi-automatic trigger technology for the HK roller-delayed platform. Engineered by Rare Breed, this forced reset trigger (FRT) system provides a three-position selector—safe, semi-automatic, and forced reset—allowing the shooter to experience a controlled, rapid cyclic rate while maintaining full compliance with federal regulations. The SEF (Schieß, Einzelfeuer, Feuerstoss) housing configuration ensures direct compatibility with standard HK MP5, MP5K, SP5, and SP5K lower receivers, making it a drop-in upgrade for these iconic firearms. This trigger system is designed for shooters who demand precision, speed, and reliability from their HK platform without sacrificing legal semi-automatic operation.

Features and Specs

• Three-position selector (safe, semi-automatic, forced reset) with a two-stage trigger pull in semi-auto mode, offering a crisp break and short reset for accurate shooting.
• Forced reset function mechanically returns the trigger forward after each shot, enabling rapid follow-up shots without converting the firearm to full-auto; compatible with standard HK MP5, MP5K, SP5, and SP5K lower receivers using SEF pictograms.
• Manufactured by Rare Breed using heat-treated steel and precision-machined components; includes all necessary springs, pins, and install tools for a direct drop-in installation requiring no permanent modification.
• Trigger pull weight calibrated at approximately 5.5 pounds in semi-auto mode; forced reset cycle designed to work with factory and aftermarket bolt carriers and hammer springs.

Who It Is For

This FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K is built for the experienced HK owner who wants to maximize the cyclic performance of their roller-delayed firearm without moving to a registered full-auto system. It is ideal for competitive shooters in USPSA, PCC, or three-gun matches who need split times under 0.10 seconds while maintaining shot placement. Law enforcement and military personnel who train with the MP5 platform will find the forced reset trigger useful for drills requiring fast, controlled pairs. Collectors and enthusiasts who own SP5 or SP5K models and seek a high-performance upgrade that retains the classic SEF layout will appreciate the engineering behind this Rare Breed system. This trigger is not intended for casual plinking or first-time gun owners; it requires a solid understanding of trigger manipulation and safe handling practices.

Shipping and FFL

This FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K is a firearm component and ships directly to your address without requiring an FFL transfer. However, please verify your local, state, and federal laws before ordering, as forced reset triggers may be restricted in certain jurisdictions. Rare Breed triggers comply with ATF rulings as of the date of manufacture, but regulations change; you are responsible for ensuring compliance. We ship via USPS Priority Mail or UPS Ground with signature confirmation. Returns are accepted within 14 days of delivery for unopened, unused items only. For questions about compatibility with your specific HK model or shipping restrictions, contact our customer service team before placing your order.