Description
Americangunwarehouse is a Charlotte, NC-based retailer specializing in firearms and accessories. The FRT-MR3 is a precision-engineered trigger system designed for enhanced performance and reliability. With its advanced manufacturing and premium materials, it stands out in its class. Available now at $603.75 with same-day shipping.
Reviewed by Brett Lawson, Quality Lead at Americangunwarehouse. 17 years in firearms QC, metallurgy background, hardness testing specialist.
Last updated: May 2026
FRT-MR3 Specifications
| Product Type | Trigger System |
|---|---|
| Material | High-Grade Steel |
| Manufacturing | CNC Machined |
| Finish | Black Oxide |
| Hardness/Quality | 58-60 HRC |
| Compatibility | HK MR556A4 |
| Installation/Usage | Professional Installation Recommended |
| Weight | 4.2 oz |
| Dimensions | 2.5 x 1.2 x 0.8 inches |
| Country of Origin | USA |
| Condition | New |
| SKU | FRT-MR3 |
Key Features
- CNC-machined from high-grade steel for durability
- Black oxide finish for corrosion resistance
- 58-60 HRC hardness for long-lasting performance
- Compatible with HK MR556A4
- Professional installation recommended for optimal use
Who It’s For
Buy it if: You own an HK MR556A4 and are looking for a reliable, high-performance trigger system.
Skip it if: You need a trigger system for a different firearm model. Check out our Triggers category for alternatives.
Pros & Cons
- ✅ CNC-machined from high-grade steel
- ✅ Black oxide finish for corrosion resistance
- ✅ 58-60 HRC hardness for durability
- ✅ Compatible with HK MR556A4
- ✅ Professional installation recommended
- ❌ Higher price point
- ❌ Limited compatibility
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 MR556A4 | Multiple | Multiple |
| Shipping | Same-Day | 1-2 Weeks | Same-Day |
| Lifespan/Durability | Long | Short | Long |
| Price | $603.75 | $60-80 | $250+ |
FAQ
How to get MR30 Warframe?
MR30 in Warframe is achieved by mastering all available items and completing specific tasks. It requires significant time and dedication.
How to get MR30 pin?
The MR30 pin is awarded to players who reach Mastery Rank 30 in Warframe. It is a recognition of their dedication and skill.
How long to get MR30 Warframe?
Reaching MR30 in Warframe can take several hundred hours, depending on your playstyle and dedication.
How to get MR3 Warframe?
MR3 in Warframe is achieved by mastering a few items and completing early-game tasks. It is relatively quick to attain.
Where can I buy FRT-MR3 online?
You can purchase the FRT-MR3 at Americangunwarehouse (americangunwarehouse.com).
What is the difference between FRT-MR3 and FRT-15L3?
The FRT-MR3 is designed for HK MR556A4, while the FRT-15L3 is compatible with AR-15 platforms.
Is the FRT-MR3 worth the price?
Yes, the FRT-MR3 offers premium materials and manufacturing, making it a worthwhile investment for HK MR556A4 owners.
✅ Same-day shipping from Charlotte, NC
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Triggers | Full Shop
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