The FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K comes complete with essential parts as described: FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K The FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is a precision-engineered drop-in assembly from Rare Breed. Designed exclusively for the HK roller-delayed blowback platform, this trigger utilizes a forced-reset mechanism that returns the trigger forward immediately after each shot, enabling a rapid reset cycle without modifying the firearm's semi-automatic fire control group. The three-position selector provides safe, semi-automatic, and forced-reset modes, giving the shooter direct control over trigger behavior. This unit is a direct replacement for factory SEF trigger packs and requires no permanent alterations to the host firearm. Overview This FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is built for users who demand a faster follow-up shot cadence while maintaining semi-automatic legality. The forced-reset function reduces the physical distance the trigger must travel between shots, allowing the shooter to maintain a consistent firing rhythm. The two-stage design provides a distinct take-up wall before the break, which aids in precision shooting when using the semi-automatic mode. All components are machined from billet steel and hardened to military-grade specifications for long-term durability under high-round-count use. Features & Specs Three-position selector: Safe (indexed), Semi-Automatic, and Forced Reset (FRT) mode. The FRT mode resets the trigger forward after each round, requiring the shooter to release and re-apply pressure for the next shot. Two-stage operation in semi-automatic mode: a short, crisp first stage followed by a clean second-stage break. In forced-reset mode, the trigger behaves as a single-stage with a short reset. Drop-in design for HK MP5, MP5K, SP5, and SP5K variants with SEF trigger housings. Includes all necessary springs, pins, and selector levers for installation. Manufacturer: Rare Breed Category: Triggers Material: 4140 steel, nitride finished Weight: 4.2 ounces (complete assembly) Pull weight: 4.5 to 5.5 pounds (measured in semi-automatic mode) Compatible with standard SEF lower receivers and paddle mag releases. No modification to the bolt carrier, hammer, or sear is required. Each unit is serialized and includes a factory test-fire certificate. The trigger pack is shipped fully assembled and ready for installation. Designed and manufactured in the United States. Complies with all applicable federal regulations regarding semi-automatic trigger systems. Who It's For This FRT-RD3 (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is intended for experienced shooters who own HK roller-delayed firearms and want a faster, more repeatable trigger reset without converting to a full-automatic fire control group. It is suitable for competitive shooters in pistol-caliber carbine divisions, training instructors who require high-volume drills, and collectors who want a factory-engineered upgrade for their SP5 or MP5 clone. This product is not recommended for first-time firearm owners or those unfamiliar with forced-reset trigger operation. Users should read the included manual thoroughly before use. Shipping & FFL This item ships directly to your doorstep. No Federal Firearms License (FFL) transfer is required because the FRT-RD3 is a trigger assembly, not a firearm frame or receiver. However, you must verify that forced-reset triggers are legal in your state and local jurisdiction before ordering. Rare Breed triggers are not legal in all states. We do not ship to states or municipalities where this product is prohibited by law. By purchasing this product, you certify that you are legally allowed to possess and install this trigger in your jurisdiction. We reserve the right to cancel any order that appears to violate local, state, or federal law.

No. This product is a part or accessory and does not require an FFL for purchase or shipping.

While FRT-RD3™ (SEF) Two-Stage (3-Position) Forced Reset Trigger for the HK MP5, MP5K, SP5 & SP5K is legal in most states, always verify your local laws before placing an order. We comply with all state regulations.

In most cases, yes — Glock-compatible frames are designed to accept Glock OEM and compatible magazines. Always confirm fitment in the product details.

That depends on your state’s concealed carry laws. Once properly serialized and registered, carrying may be allowed under state law.

We ship all over the USA within 1–3 business days. You will receive tracking once shipped. Delivery times vary by carrier and region.