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

Overview

The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K is a precision-engineered drop-in trigger system from Rare Breed. This unit replaces the factory trigger pack in SEF-compatible MP5 platforms, delivering a forced-reset cycling mechanism that returns the trigger forward under recoil energy. Designed specifically for the HK roller-delayed blowback system, the FRT-RD3 operates in three selectable positions: safe, semi-automatic, and a forced-reset mode that resets the trigger without manual assistance from the shooter. This trigger maintains the OEM bolt carrier group geometry and requires no permanent modification to the host firearm.

Features & Specs

• Three-position selector: safe, semi-automatic, and forced-reset mode for enhanced cyclic control
• Forced-reset technology uses bolt carrier energy to automatically reset the trigger between shots
• Drop-in design fits standard SEF trigger housings on HK MP5, MP5K, SP5, and SP5K models
• Two-stage trigger pull with a distinct wall before the break point for improved accuracy
• Manufactured by Rare Breed to MIL-spec tolerances with heat-treated steel internal components
• Category: Triggers — compatible with all factory HK and licensed clone SEF lower receivers

Who It’s For

This trigger system is built for experienced shooters operating HK MP5, MP5K, SP5, or SP5K platforms who want to increase their practical rate of fire while maintaining legal semi-automatic functionality. The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K is suited for competitive shooters in USPSA or 3-Gun divisions that permit forced-reset triggers, as well as advanced enthusiasts training for defensive scenarios. Law enforcement armorers and civilian owners who understand the mechanical distinction between forced-reset and full-automatic operation will appreciate the predictable two-stage break and the tactile reset feedback. This trigger is not recommended for inexperienced shooters or those unfamiliar with manual bolt manipulation.

Shipping & FFL

This FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K ships directly to your door. No Federal Firearms License (FFL) transfer is required because this item is classified as a firearm component, not a complete firearm. Check your state and local laws before ordering. Some jurisdictions restrict forced-reset triggers or classify them differently. By purchasing this product, you certify that you are not prohibited from owning firearm parts and that you will comply with all applicable laws. Rare Breed triggers are intended for use in semi-automatic firearms only. Any modification to convert this trigger to full-automatic operation is illegal under federal law. We reserve the right to refuse orders to restricted areas.