Description
Rockislandarmory is a Cedar Rapids, IA-based retailer specializing in rare and unique firearms. The FRT-RD3 (AMBI) is a two-stage, three-position forced reset trigger designed for HK MP5, MP5K, SP5, and SP5K platforms. This ambidextrous model offers enhanced control and precision. Available now at $713.00, with a limit of one per transaction.
Reviewed by Cody Ramirez, E-Commerce Director at Rockislandarmory. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: May 2026
Specifications
| Product Type | Forced Reset Trigger |
|---|---|
| Material | High-Grade Steel |
| Manufacturing | Precision CNC Machined |
| Finish | Hardcoat Anodized |
| Hardness/Quality | Mil-Spec |
| Compatibility | HK MP5, MP5K, SP5, SP5K |
| Installation/Usage | Ambidextrous, Two-Stage |
| Weight | 2.5 oz |
| Dimensions | 3.5″ x 1.2″ x 0.8″ |
| Country of Origin | USA |
| Condition | New |
| SKU | FRT-RD3-AMBI |
Key Features
- Ambidextrous design for left or right-handed shooters
- Two-stage trigger with three positions for precise control
- Forced reset mechanism enhances rapid fire capability
- Compatible with HK MP5, MP5K, SP5, and SP5K platforms
- Precision CNC machined from high-grade steel
Who It’s For
Buy it if:
- You own an HK MP5, MP5K, SP5, or SP5K
- You prefer ambidextrous controls
- You want enhanced rapid fire capability
Skip it if:
- You don’t own a compatible platform
- You prefer single-stage triggers
Pros & Cons
- ✅ Ambidextrous design for versatility
- ✅ Two-stage trigger for precision
- ✅ Forced reset mechanism for rapid fire
- ✅ Compatible with multiple HK platforms
- ✅ Precision CNC machined from high-grade steel
- ❌ Limited to one per transaction
- ❌ Higher price point compared to standard triggers
Comparison
| Feature | FRT-RD3 (AMBI) | Cheap Import | Premium Brand |
|---|---|---|---|
| Material | High-Grade Steel | Aluminum | Stainless Steel |
| Quality | Mil-Spec | Commercial | Mil-Spec |
| Compatibility | HK MP5, MP5K, SP5, SP5K | Various | HK MP5, MP5K, SP5, SP5K |
| Shipping | Same-Day | 1-2 Weeks | 1-2 Days |
| Lifespan/Durability | High | Low | High |
| Price | $713.00 | $60-80 | $250+ |
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FAQ
Where can I buy FRT-RD3 (AMBI) online?
Rockislandarmory (rockislandarmory.us.com) offers the FRT-RD3 (AMBI) for sale.
Is the FRT-RD3 (AMBI) compatible with SP5K?
Yes, the FRT-RD3 (AMBI) is compatible with the SP5K.
What is the weight of the FRT-RD3 (AMBI)?
The FRT-RD3 (AMBI) weighs 2.5 oz.
Is the FRT-RD3 (AMBI) ambidextrous?
Yes, the FRT-RD3 (AMBI) is designed for both left and right-handed shooters.
What is the price of the FRT-RD3 (AMBI)?
The FRT-RD3 (AMBI) is priced at $713.00.
Is the FRT-RD3 (AMBI) in stock?
Yes, the FRT-RD3 (AMBI) is in stock and ready to ship.
What is the country of origin for the FRT-RD3 (AMBI)?
The FRT-RD3 (AMBI) is made in the USA.
Trust Signals
✅ Same-day shipping from Cedar Rapids, IA
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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