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

Overview

Rare Breed brings its proven forced reset technology to the HK roller-delayed platform with the FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger. Engineered specifically for the HK MP5, MP5K, SP5, and SP5K, this drop-in trigger group delivers the same reliable, semi-automatic forced reset function that has defined the FRT series. The ambidextrous design ensures left- and right-handed shooters can operate the selector without compromise. This is a direct replacement for factory trigger packs and requires no permanent modification to your firearm. The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K is a precision component built for shooters who demand consistent performance under rapid fire.

Features and Specs

The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger is a complete trigger pack assembly manufactured by Rare Breed in the United States. It is classified as a trigger group and falls under the Triggers category. The unit offers three selector positions: Safe, Semi-Automatic, and Forced Reset. In the forced reset position, the trigger mechanism physically resets forward after each shot, allowing the shooter to maintain a rapid, controlled firing rhythm without altering the firearm’s semi-automatic function. The two-stage design provides a distinct take-up and a crisp break, while the ambidextrous selector lever accommodates both left- and right-handed operators.

• Three-position selector: Safe, Semi-Automatic, and Forced Reset mode
• Ambi selector lever compatible with HK MP5, MP5K, SP5, and SP5K
• Two-stage trigger pull with a defined wall and clean break
• Drop-in design; no drilling, filing, or permanent modifications required
• Manufactured by Rare Breed, a U.S.-based firearms component company

The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K uses the same force reset mechanism proven in the AR-15 platform, now adapted for roller-delayed blowback systems. All internal components are precision-machined from steel and heat-treated for durability. The trigger housing is constructed from reinforced polymer to withstand continuous use.

• Precision-machined steel internal components with heat treatment
• Reinforced polymer trigger housing
• Compatible with factory HK MP5, MP5K, SP5, and SP5K lower receivers
• No aftermarket grip or safety modifications needed
• Includes all necessary pins and springs for installation

Who It Is For

This trigger is designed for HK MP5, MP5K, SP5, and SP5K owners who want to upgrade their factory trigger to a forced reset system without permanently altering their firearm. It is intended for competitive shooters, training professionals, and experienced enthusiasts who understand the operational characteristics of forced reset triggers. The ambidextrous controls make it suitable for left-handed shooters or those who train extensively with support-hand shooting. This product is not recommended for casual shooters unfamiliar with forced reset mechanics. The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K requires the user to maintain proper trigger discipline and follow all applicable laws regarding trigger modifications.

• HK MP5, MP5K, SP5, and SP5K owners seeking a performance upgrade
• Competitive shooters and training professionals
• Experienced shooters familiar with forced reset trigger operation
• Left-handed and ambidextrous shooters

Shipping and FFL

This item is a firearm component and is not a firearm frame or receiver. It may be shipped directly to your residence in most states. However, because laws regarding triggers and forced reset devices vary by state and local jurisdiction, it is your responsibility to verify that this product is legal to possess in your area before ordering. Some states or municipalities may restrict the sale, possession, or use of forced reset triggers. No FFL transfer is required for this product under federal law, but you must comply with all state and local regulations. We reserve the right to cancel orders that cannot be legally fulfilled. By purchasing this product, you certify that you are not prohibited from owning firearm components and that you will comply with all applicable laws.