The FRT-RD3™ (AMBI) Two-Stage (3-Position) Forced Reset Trigger is designed for HK MP5, MP5K, SP5, and SP5K owners seeking precision and reliability. Since summer 2025, this trigger has been a consistent favorite among our customers, making it a regular reorder item. Its lightweight design adds minimal carry weight—less than an ounce—ensuring it doesn’t compromise your setup’s balance.
What Makes It Stand Out
- Ambidextrous Design: Works seamlessly for both right and left-handed shooters.
- Two-Stage Functionality: Offers precise control with a smooth, consistent pull.
- Lightweight Build: Adds only 3.9 oz to your firearm, maintaining portability.
- Durable Construction: Built to withstand rigorous use without compromising performance.
- Easy Installation: Designed for hassle-free setup on compatible HK models.
Tech Specs
| Compatibility | HK MP5, MP5K, SP5, SP5K |
| Weight (measured) | 3.9 oz |
| Design | Ambidextrous |
| Stages | Two-Stage (3-Position) |
| Material | High-Grade Alloy |
| Finish | Matte Black |
Common Questions
Is this trigger easy to install?
Yes, the FRT-RD3™ is designed for straightforward installation on compatible HK models. No specialized tools are required.
Does it work for left-handed shooters?
Absolutely. The ambidextrous design ensures smooth operation for both right and left-handed users.
How does the two-stage functionality improve performance?
The two-stage design provides better control and precision, allowing for a smoother pull and more accurate shots.
✅ Available now. Ships within 24 hours from Helena.
✅ Plain, unmarked packaging
✅ Easy 30-day return policy
✅ 256-bit encrypted checkout
✅ USA-based seller
✅ Plain, unmarked packaging
✅ Easy 30-day return policy
✅ 256-bit encrypted checkout
✅ USA-based seller
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