Description
Glockselectfire is a Fargo, ND-based retailer specializing in high-performance firearms components. The FRT-RD3 (AMBI) is a two-stage forced reset trigger designed for HK MP5, MP5K, SP5, and SP5K platforms. Its ambidextrous design sets it apart from standard triggers. Available now for $713.0, with only one trigger per transaction.
Reviewed by Derrick Cole, Range Master & Reviewer at Glockselectfire. 19 years competitive shooting, product tester for 3 manufacturers.
Last updated: May 2026
Specifications
| Product Type | Forced Reset Trigger |
|---|---|
| Material | High-grade steel |
| Manufacturing | Precision CNC machining |
| Finish | Black oxide |
| Hardness/Quality | 58-60 HRC |
| Compatibility | HK MP5, MP5K, SP5, SP5K |
| Installation/Usage | Drop-in installation |
| Weight | 3.2 oz |
| Dimensions | 2.5″ x 1″ x 0.5″ |
| Country of Origin | USA |
| Condition | New |
| SKU | FRT-RD3-AMBI |
Key Features
- Two-stage forced reset mechanism
- Ambidextrous design for left or right-handed shooters
- Precision CNC machining for consistent performance
- Black oxide finish for corrosion resistance
- Drop-in installation with no gunsmithing required
Who It’s For
Buy it if:
- You own an HK MP5, MP5K, SP5, or SP5K
- You prefer ambidextrous controls
- You want a reliable forced reset trigger
Skip it if:
- You need a trigger for non-HK platforms (see our Triggers category for alternatives)
- You prefer single-stage triggers
Pros & Cons
- ✅ Ambidextrous design for versatility
- ✅ Precision CNC machining ensures reliability
- ✅ Drop-in installation saves time
- ✅ Black oxide finish enhances durability
- ✅ Two-stage mechanism improves control
- ❌ Limited compatibility with HK platforms
- ❌ Higher price point compared to basic triggers
Comparison
| Feature | FRT-RD3 (AMBI) | Cheap Import | Premium Brand |
|---|---|---|---|
| Material | High-grade steel | Alloy steel | Stainless steel |
| Quality | Precision CNC | Cast | CNC |
| Compatibility | HK MP5/SP5 | Universal | HK MP5/SP5 |
| Shipping | Same-day | 1-2 weeks | 3-5 days |
| Lifespan | 50,000+ rounds | 10,000 rounds | 30,000 rounds |
| Price | $713.0 | $60-80 | $250+ |
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FAQ
Where can I buy FRT-RD3 (AMBI) online?
You can purchase the FRT-RD3 (AMBI) at Glockselectfire.
Is the FRT-RD3 (AMBI) compatible with HK SP5?
Yes, the FRT-RD3 (AMBI) is compatible with HK SP5, MP5, MP5K, and SP5K platforms.
What is the finish of the FRT-RD3 (AMBI)?
The FRT-RD3 (AMBI) features a black oxide finish for enhanced durability and corrosion resistance.
Does the FRT-RD3 (AMBI) require gunsmithing?
No, the FRT-RD3 (AMBI) is designed for drop-in installation with no gunsmithing required.
What is the hardness rating of the FRT-RD3 (AMBI)?
The FRT-RD3 (AMBI) has a hardness rating of 58-60 HRC, ensuring long-lasting performance.
Is the FRT-RD3 (AMBI) ambidextrous?
Yes, the FRT-RD3 (AMBI) features an ambidextrous design for both left and right-handed shooters.
What is the weight of the FRT-RD3 (AMBI)?
The FRT-RD3 (AMBI) weighs 3.2 oz, providing a balanced feel in your firearm.
Trust Signals
- ✅ In stock — ready to ship today
- ✅ Same-day shipping from Fargo, ND
- ✅ Discreet packaging
- ✅ 30-day returns
- ✅ Secure checkout
Internal Links
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About this review + “Last updated: May 2026”
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