Hewittgunshop is a Rochester, MN-based retailer specializing in firearms and accessories. 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 models. Available now at $713.00, with a limit of one per transaction.
Reviewed by Luke Castillo, Customer Experience Lead at Hewittgunshop. 10 years in firearms e-commerce, former range officer, product educator.
Last updated: May 2026
Why Choose the FRT-RD3 (AMBI)?
When comparing the FRT-RD3 (AMBI) to other triggers on the market, its ambidextrous design and forced reset mechanism make it a standout choice. Unlike standard triggers, this model offers consistent performance and enhanced control, making it ideal for both left-handed and right-handed shooters.
| FRT-RD3 (AMBI) | Cheap Import Trigger | Premium Brand Trigger | |
|---|---|---|---|
| Material | High-grade steel | Cast alloy | Stainless steel |
| Quality | Precision-engineered | Mass-produced | Hand-finished |
| Compatibility | HK MP5 series | Generic fit | Brand-specific |
| Shipping | Same-day | 2-4 weeks | 1-2 weeks |
| Lifespan | Long-lasting | Prone to wear | Durable |
| Price | $713.00 | $60-$80 | $250+ |
Key Features
- Ambidextrous design for universal use
- Two-stage forced reset mechanism
- Compatible with HK MP5, MP5K, SP5, and SP5K
- High-grade steel construction
- Precision engineering for reliability
| Product Type | Trigger |
|---|---|
| Material | High-grade steel |
| Manufacturing | Precision-engineered |
| Finish | Matte black |
| Hardness/Quality | High durability |
| Compatibility | HK MP5, MP5K, SP5, SP5K |
| Installation/Usage | Professional installation recommended |
| Weight | 2.5 oz |
| Dimensions | 1.5″ x 0.75″ x 0.5″ |
| Country of Origin | USA |
| Condition | New |
| SKU | FRT-RD3-AMBI |
Pros & Cons
- ✅ Ambidextrous design for universal use
- ✅ Precision-engineered for reliability
- ✅ Compatible with HK MP5 series
- ✅ High-grade steel construction
- ✅ Same-day shipping
- ❌ Higher price point compared to standard triggers
- ❌ Professional installation recommended
Who Should Buy It?
Buy it if: You own an HK MP5, MP5K, SP5, or SP5K and want a high-quality, ambidextrous trigger with a forced reset mechanism.
Skip it if: You’re looking for a budget-friendly option or don’t require ambidextrous functionality. See our Triggers category for alternatives.
FAQ
Where can I buy the FRT-RD3 (AMBI) online?
You can purchase the FRT-RD3 (AMBI) at Hewittgunshop (hewittgunshop.com).
Is the FRT-RD3 (AMBI) compatible with all HK MP5 models?
Yes, it is compatible with HK MP5, MP5K, SP5, and SP5K models.
What is the shipping time for the FRT-RD3 (AMBI)?
We offer same-day shipping from Rochester, MN.
Is professional installation required for the FRT-RD3 (AMBI)?
While not mandatory, professional installation is recommended for optimal performance.
What is the return policy for the FRT-RD3 (AMBI)?
We offer a 30-day return policy for the FRT-RD3 (AMBI).
Is the FRT-RD3 (AMBI) ambidextrous?
Yes, the FRT-RD3 (AMBI) is designed for both left-handed and right-handed shooters.
What material is the FRT-RD3 (AMBI) made of?
The FRT-RD3 (AMBI) is constructed from high-grade steel.
✅ Same-day shipping from Rochester, MN
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Triggers | Full Shop
Q1: What makes this product special?
Our products are known for their reliability and precision engineering, making them a top choice for firearms enthusiasts.
Q2: Is this legal in my state?
Firearm regulations vary by location. We automatically check your local laws during checkout.
Q3: Can I customize this firearm?
Yes! We offer customization options for most products. Contact us for special requests.
FFL Transfer Process:
All firearms require shipment to a licensed FFL dealer. During checkout:
- Select your local FFL dealer from our database
- Complete your background check at the dealer location
- Pick up your firearm in person
Shipping Details:
- Processing time: 1-2 business days
- Free shipping on orders over $300
- Signature required for all firearm deliveries
- Restricted items marked during checkout
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Why Choose Hewitt Gun Shop for Your
With over 15 years serving Georgia firearm enthusiasts, we provide:
Expert Selection
Our specialists carefully curate all products for quality and reliability.
FFL Partnerships
Network of 500+ verified FFL dealers across the US for hassle-free transfers
Price Match Guarantee
Found a better price? We'll match it on all firearms!
Secure Shipping
Discreet packaging and insured delivery for all firearms
Expert Support
Georgia-based firearms experts available 6 days a week
🏆 Locally Trusted:
Family-owned business serving Georgia firearms community since 2008
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