Polymer80Deals is a Carson City, NV-based retailer specializing in high-performance firearm components. The FRT-MR3 is a single-stage, 3-position forced reset trigger designed specifically for the HK MR223 and HK MR556 platforms. Engineered for precision and reliability, this trigger offers a unique reset mechanism that enhances shooting performance. Available now for $603.75 with same-day shipping.
Reviewed by Kyle Brennan, Chief Armorer at Polymer80Deals. 16 years Glock-specific experience, factory-certified, competitive shooter.
Last updated: May 2026
Specifications
| Product Type | Single-Stage Forced Reset Trigger |
|---|---|
| Material | High-Grade Steel |
| Manufacturing | CNC Machined |
| Finish | Black Oxide |
| Hardness/Quality | 58-60 HRC |
| Compatibility | HK MR223, HK MR556 |
| Installation/Usage | Drop-In |
| Weight | 2.5 oz |
| Dimensions | 2.75″ x 1.5″ x 0.75″ |
| Country of Origin | USA |
| Condition | New |
| SKU | FRT-MR3 |
Key Features
- Single-stage design with a crisp break
- 3-position selector drum for versatile operation
- Includes anti-walk pins and screws for secure installation
- Compatible with HK MR223 and HK MR556 platforms
- CNC machined from high-grade steel for durability
Who It’s For
Buy it if: You own an HK MR223 or HK MR556 and are looking for a high-performance trigger that offers a unique reset mechanism for enhanced shooting experience.
Skip it if: You are looking for a trigger for a different platform. Check out our Triggers section for alternatives.
Pros & Cons
- ✅ Precision-engineered for HK MR223 and HK MR556
- ✅ Includes all necessary installation hardware
- ✅ CNC machined from high-grade steel
- ✅ Black oxide finish for corrosion resistance
- ✅ Easy drop-in installation
- ❌ Higher price point compared to basic triggers
- ❌ Limited compatibility with other platforms
Comparison
| Feature | FRT-MR3 | Cheap Import | Premium Brand |
|---|---|---|---|
| Material | High-Grade Steel | Low-Grade Steel | High-Grade Steel |
| Quality | CNC Machined | Cast | CNC Machined |
| Compatibility | HK MR223, HK MR556 | Various | Various |
| Shipping | Same-Day | 1-2 Weeks | 1 Week |
| Lifespan/Durability | High | Low | High |
| Price | $603.75 | $60-$80 | $250+ |
FAQ
Where can I buy FRT-MR3 online?
You can purchase the FRT-MR3 online at Polymer80Deals (polymer80deals.com).
How to get MR30 Warframe?
To achieve MR30 in Warframe, you need to level up all available equipment and complete various in-game challenges.
How to get MR30?
MR30 in Warframe is achieved by mastering all available weapons, frames, and companions.
How to get MR30 pin?
The MR30 pin is typically awarded by the developers to players who reach MR30 in Warframe.
How to get MR3 Warframe?
To reach MR3 in Warframe, you need to level up your mastery rank by gaining experience from new weapons and frames.
How long to get MR30 Warframe?
The time to reach MR30 in Warframe varies based on your playtime and dedication, but it typically takes several months to years.
What platforms are compatible with FRT-MR3?
The FRT-MR3 is compatible with HK MR223 and HK MR556 platforms.
✅ Same-day shipping from Carson City, NV
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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