Description

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

The FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K represents a precision-engineered upgrade for roller-delayed blowback platforms. Manufactured by Rare Breed, this trigger system delivers a distinct mechanical cycling profile through its forced-reset design. The three-position selector allows the operator to choose between safe, semi-automatic fire, and the forced-reset mode that resets the trigger forward automatically after each shot, enabling rapid follow-up shots while maintaining a manual trigger pull for each discharge. The ambidextrous configuration ensures full accessibility for left-handed and right-handed shooters without compromising ergonomics or control placement.

Overview

The FRT-RD3 is a drop-in trigger assembly built specifically for the HK MP5, MP5K, SP5, and SP5K platforms. It replaces the factory trigger pack with a two-stage mechanism that provides a distinct wall and break point, followed by a forced-reset action that pushes the trigger forward after the bolt cycles. This creates a consistent shooting rhythm that relies on the shooter’s input for each round. The trigger housing is CNC-machined from billet aluminum with a hard-anodized finish, and all internal components are precision-ground and heat-treated for longevity. The ambidextrous selector lever allows instant mode changes from either side of the receiver, making this trigger suitable for both tactical applications and range use.

Features and Specifications

• Three-position ambidextrous selector: Safe, Semi-Automatic, and Forced Reset mode, with positive detent engagement at each position for tactile feedback and audible confirmation
• Two-stage trigger pull: A light first stage take-up (approximately 2-3 pounds) followed by a crisp second stage break (approximately 4-5 pounds total pull weight in semi-automatic mode), with the forced-reset mode providing a consistent reset point after each shot
• Drop-in design with no permanent modification required to the host firearm: Ships as a complete trigger pack assembly that installs directly into the HK MP5, MP5K, SP5, and SP5K lower receiver without drilling, filing, or fitting

Who It Is For

This trigger is designed for experienced shooters who own HK MP5, MP5K, SP5, or SP5K firearms and seek a mechanical advantage in rapid-fire scenarios without converting to full-automatic operation. It is suited for competitive shooters in outlaw or open divisions where forced-reset triggers are permitted, as well as for training environments where simulating higher cyclic rates improves trigger discipline and recoil management. Collectors and enthusiasts who appreciate the engineering behind forced-reset mechanisms will find the FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K to be a technically interesting addition to their platform. Law enforcement and security personnel who train with MP5-series weapons may also utilize this trigger for advanced marksmanship drills, provided it complies with departmental policies. This product is not intended for novice shooters unfamiliar with forced-reset trigger operation, as the unique cycling requires deliberate practice to maintain safe handling.

Shipping and FFL

This trigger is classified as a firearm component and ships directly to your residence. No Federal Firearms License (FFL) transfer is required for purchase or delivery, as the FRT-RD3 (Ambi) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 and SP5K is not a serialized firearm receiver. However, you must ensure compliance with all applicable federal, state, and local laws regarding trigger mechanisms and forced-reset devices prior to placing an order. Some jurisdictions restrict or prohibit the possession or use of forced-reset triggers. By purchasing this product, you certify that you are legally eligible to own and operate it in your location. We recommend verifying current regulations with your local law enforcement or legal counsel before purchase. Standard shipping rates apply, and orders are processed within one to two business days.