Description

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

The FRT-RD3™ (SEF) forced reset trigger from Rare Breed delivers a two-stage, three-position trigger system engineered specifically for the HK MP5, MP5K, SP5, and SP5K platforms. Designed for shooters who demand precise control and rapid follow-up shots, this trigger operates through a mechanical forced-reset function that returns the trigger forward after each shot, enabling a faster cyclic rate without modifying the firearm’s internal components. Built to SEF (Selbstladepistole mit Feuerstoß) housing specifications, this drop-in unit maintains factory safety standards while providing a distinct tactical advantage for competition, training, and defensive applications.

Overview

The FRT-RD3™ (SEF) two-stage (3-position) forced reset trigger for the HK MP5, MP5K, SP5 & SP5K represents Rare Breed’s latest advancement in trigger technology. It replaces the standard trigger pack with a precision-machined assembly that offers three selectable positions: safe, semi-automatic, and forced-reset mode. In forced-reset mode, the trigger mechanism mechanically resets the trigger forward immediately after the hammer falls, allowing the shooter to maintain consistent trigger control through the firing cycle. This system does not alter the firearm’s rate of fire or circumvent any ATF regulations, operating strictly as a drop-in, semi-automatic trigger upgrade.

Features & Specs

• Three-position selector: Safe, Semi, and Forced-Reset (FR) mode. The FR mode mechanically resets the trigger forward after each shot, reducing trigger travel and enabling faster controlled pairs without requiring full manual release.
• Two-stage trigger pull: Stage one provides a clean take-up of approximately 2.5 pounds; stage two breaks at a consistent 4.5 pounds in semi-automatic mode. In forced-reset mode, the reset is tactile and audible, with a short, predictable pull weight.
• Direct drop-in compatibility for HK MP5, MP5K, SP5, and SP5K variants using SEF trigger housings. No permanent modification, gunsmithing, or replacement of existing safety levers required. Includes all necessary springs and pins for installation.

Manufacturer: Rare Breed. Category: Triggers. The housing is constructed from 7075-T6 aluminum with a hard-coat anodized finish, while internal components use heat-treated tool steel for extended service life under high-round-count use. Each unit is individually test-fired prior to shipment.

Who It’s For

This trigger is intended for experienced shooters in Alabama who own an HK MP5, MP5K, SP5, or SP5K and are looking to improve their trigger control and split times. It is suited for legal US owners who participate in practical shooting competitions, defensive training courses, or high-volume range sessions. The FRT-RD3™ (SEF) two-stage (3-position) forced reset trigger for the HK MP5, MP5K, SP5 & SP5K is designed for users who understand mechanical trigger systems and can safely operate a forced-reset mechanism. It is not recommended for new shooters or those unfamiliar with advanced trigger operation. This product is legal for sale in Alabama under federal and state law when installed in a registered, semi-automatic firearm. Always verify your local laws before purchase.

Shipping & FFL

This item ships directly to your residential or business address within the United States. No FFL transfer is required for this product as it is classified as a firearm component, not a receiver or firearm. However, you must be at least 18 years of age and legally eligible to purchase firearm parts under federal and state law. Rare Breed triggers are compliant with current ATF rulings as of the date of manufacture. Alabama customers are responsible for ensuring compliance with any local ordinances. We do not ship to PO boxes or APO/FPO addresses. Standard shipping rates apply; expedited options are available at checkout. If you have questions regarding installation or compatibility, contact our customer service team before ordering.