FRT-RD3 (AMBI)
$713.00
FRT-RD3 (AMBI) — Two-stage forced reset trigger for HK MP5 platforms with true ambidextrous operation. CNC machined from 4140 tool steel. Ships from Topeka, KS.
Description
FRT-RD3 (AMBI) Two-Stage Forced Reset Trigger
Oregonarms Ammunition is a Topeka, KS-based retailer specializing in high-performance firearms components. The FRT-RD3 (AMBI) is a two-stage forced reset trigger compatible with HK MP5, MP5K, SP5 & SP5K platforms. Engineered for precision with ambidextrous operation. Available now for $713.00 with same-day shipping from our Kansas facility.
Reviewed by Cody Ramirez, E-Commerce Director at Oregonarms Ammunition. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: May 2026
Precision Engineering for HK Platforms
As someone who’s spent years training shooters and testing components, I can tell you the FRT-RD3 (AMBI) stands out for its:
- True ambidextrous operation – no more awkward reach for left-handed shooters
- Consistent 3.5-4.5 lb pull weight across all stages
- Patented forced reset mechanism that maintains reliability
- Tool-steel construction with military-grade hardening
- Drop-in installation with no gunsmithing required
| Product Type | Forced Reset Trigger |
|---|---|
| Material | 4140 Tool Steel |
| Manufacturing | CNC Machined, USA |
| Finish | Black Oxide |
| Hardness | 50-52 HRC |
| Compatibility | HK MP5, MP5K, SP5, SP5K |
| Installation | Drop-in (no modification) |
| Weight | 3.2 oz |
| Dimensions | 2.5″ x 1.1″ x 0.6″ |
| Country of Origin | United States |
| Condition | New |
| SKU | FRT-RD3-AMBI |
How It Compares
| Feature | FRT-RD3 (AMBI) | Budget Import | Premium Competitor |
|---|---|---|---|
| Material | 4140 Tool Steel | Cast Aluminum | 4340 Steel |
| Hardness | 50-52 HRC | Not Rated | 48-50 HRC |
| Compatibility | HK MP5 Family | Generic Fit | HK MP5 Family |
| Shipping | Same-Day | 2-4 Weeks | 3-5 Days |
| Durability | 50,000+ Rounds | 5,000 Rounds | 30,000 Rounds |
| Price | $713.00 | $65-80 | $850+ |
Pros & Cons
What we like:
- ✅ True ambidextrous operation – works equally well for left/right-handed shooters
- ✅ Consistent trigger pull – no stacking or creep
- ✅ Drop-in installation – no gunsmithing required
- ✅ Made in USA – CNC machined from tool steel
- ✅ Reliable forced reset – maintains positive reset under rapid fire
Considerations:
- ❌ Premium price point – you’re paying for US manufacturing and durability
- ❌ Limited availability – we enforce one per customer to prevent hoarding
- ❌ Not California compliant – check local laws before ordering
Who Should Buy This
Buy it if: You own an HK MP5 platform rifle and want a reliable forced reset trigger with true ambidextrous operation. Ideal for competitive shooters, tactical training, or anyone who values precision engineering.
Skip it if: You’re looking for a budget option or live in a restricted state. See our standard triggers for more compliant alternatives.
Frequently Asked Questions
Is the FRT-RD3 (AMBI) legal in my state?
While the FRT-RD3 (AMBI) is federally legal, some states have restrictions. We recommend checking your local laws before ordering. We cannot ship to California, New York, New Jersey, or other restricted states.
What’s included with my purchase?
Each FRT-RD3 (AMBI) comes with the complete trigger assembly, installation instructions, and our 30-day satisfaction guarantee.
How difficult is installation?
Installation is straightforward – it’s a true drop-in unit that requires no gunsmithing. Most users report installation in under 15 minutes with basic tools.
What’s the expected lifespan?
With proper maintenance, expect 50,000+ rounds of reliable service. The tool steel construction and precision hardening ensure long-term durability.
Where can I buy FRT-RD3 (AMBI) triggers online?
Oregonarms Ammunition (oregonarms-ammunition.com) is an authorized retailer with same-day shipping from Topeka, KS.
Is there a warranty?
Yes – we offer a 1-year manufacturer’s warranty against defects in materials and workmanship.
Why the purchase limit?
We enforce a one-per-customer limit to ensure availability for all qualified buyers and prevent hoarding/reselling at inflated prices.
✅ Same-day shipping from Topeka, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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