Polymer80Market is a Twin Falls, ID-based retailer specializing in aftermarket Glock parts and HK MR556 accessories. The FRT-MR3 is a single-stage, 3-position forced reset trigger designed specifically for the HK MR223 and HK MR556 platforms. Its precision engineering ensures reliable performance under intense conditions. Available now for $603.75.
Reviewed by Tyler Nash, Product Curator at Polymer80Market. 13 years selecting and testing aftermarket Glock parts, reviews editor.
Last updated: May 2026
Specifications
| Product Type | Forced Reset Trigger |
|---|---|
| Material | High-grade steel |
| Manufacturing | Precision CNC machining |
| Finish | Black nitride coating |
| Hardness/Quality | 58-60 HRC |
| Compatibility | HK MR223, HK MR556 |
| Installation/Usage | Drop-in installation |
| Weight | 1.2 oz |
| Dimensions | 2.5 x 1.2 x 0.5 inches |
| Country of Origin | USA |
| Condition | Brand new |
| SKU | FRT-MR3 |
Key Features
- Single-stage, 3-position forced reset mechanism
- Includes anti-walk pins and screws for secure installation
- Compatible with HK MR223 and HK MR556 platforms
- Precision CNC machining ensures durability
- Black nitride coating for corrosion resistance
Who It’s For
Buy it if:
- You own an HK MR223 or HK MR556 and want a reliable forced reset trigger
- You prioritize precision engineering and durability
- You need a drop-in solution for your firearm
Skip it if:
- You’re looking for a budget option (see our Triggers for alternatives)
- You don’t own an HK MR223 or HK MR556
Pros & Cons
- ✅ Precision CNC machining for durability
- ✅ Includes anti-walk pins and screws
- ✅ Black nitride coating for corrosion resistance
- ✅ Drop-in installation
- ❌ Higher price point compared to budget options
- ❌ Limited compatibility with HK MR223 and HK MR556 only
Comparison
| Feature | FRT-MR3 | Cheap Import | Premium Brand |
|---|---|---|---|
| Material | High-grade steel | Low-grade steel | High-grade steel |
| Quality | Precision CNC | Basic machining | Precision CNC |
| Compatibility | HK MR223, HK MR556 | Various platforms | HK MR223, HK MR556 |
| Shipping | Same-day | 1-2 weeks | Same-day |
| Lifespan/Durability | High | Low | High |
| Price | $603.75 | $60-80 | $250+ |
Video
FAQ
Where can I buy FRT-MR3 online?
You can purchase the FRT-MR3 at Polymer80Market (polymer80market.com).
How to get MR30 Warframe?
MR30 in Warframe is achieved by mastering all available equipment and reaching Mastery Rank 30.
How to get MR30?
MR30 is obtained by mastering all equipment and completing the necessary tasks in Warframe.
How to get MR30 pin?
The MR30 pin is awarded by Digital Extremes upon reaching Mastery Rank 30 in Warframe.
How to get MR3 Warframe?
MR3 in Warframe is achieved by mastering specific equipment and completing missions to increase your Mastery Rank.
How long to get MR30 Warframe?
The time to reach MR30 in Warframe varies based on gameplay, but it typically takes several months of dedicated play.
Trust Signals
✅ In stock — ready to ship today
✅ Same-day shipping from Twin Falls, ID
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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Browse more: Triggers | Full Shop
About this review + “Last updated: May 2026”
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