Glockswitchmarket is a Meridian, MS-based retailer specializing in high-performance firearm components. The FRT-MR3 is a single-stage forced reset trigger designed specifically for the HK MR223 and HK MR556 platforms. Engineered for precision and reliability, this trigger offers a unique 3-position functionality. Available now for $603.75 with same-day shipping.
Reviewed by Mike Callahan, Head Gunsmith at Glockswitchmarket. 18 years in the firearms industry, certified armorer, 500+ builds.
Last updated: May 2026
FRT-MR3 Specifications
| Product Type | 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 with included anti-walk pins |
| Weight | 2.8 oz |
| Dimensions | 1.5″ x 0.75″ x 0.5″ |
| Country of Origin | USA |
| Condition | New |
| SKU | GSM-FRTMR3 |
Key Features
- 3-Position Functionality: Offers single-stage operation with forced reset capability
- Precision Machined: CNC-cut from high-grade steel for consistent performance
- Complete Kit: Includes both A1 and A4 selector drums for compatibility
- Anti-Walk Pins: Secures trigger assembly during rapid fire
- Black Oxide Finish: Corrosion-resistant surface treatment
Who Should Buy the FRT-MR3?
Buy it if:
- You own an HK MR223 or MR556 platform rifle
- You want a reliable forced reset trigger mechanism
- You prefer US-made components with precise machining
- You need the included anti-walk pin system
Skip it if:
- You need a trigger for standard AR-15 platforms (see our FRT-15 triggers)
- You prefer traditional two-stage triggers
- You’re looking for budget components (this is a professional-grade trigger)
FRT-MR3 Pros and Cons
✅ Pros:
- Exceptional build quality from hardened steel
- Precise forced reset mechanism
- Includes both A1 and A4 selector drums
- Anti-walk pin system prevents trigger movement
- Made in USA with tight tolerances
❌ Cons:
- Higher price point than standard triggers
- Specific to HK MR platforms only
- Requires proper installation for optimal performance
FRT-MR3 vs Competitors
| Feature | FRT-MR3 | Budget Import Trigger | Premium Brand Trigger |
|---|---|---|---|
| Material | High-grade steel | Cast alloy | Billet steel |
| Quality | CNC machined | Mass produced | Hand-finished |
| Compatibility | HK MR only | Universal fit | Platform specific |
| Shipping | Same-day | 2-4 weeks | 1-2 weeks |
| Lifespan | 50,000+ rounds | 10,000 rounds | 30,000 rounds |
| Price | $603.75 | $60-80 | $250+ |
FRT-MR3 FAQ
Where can I buy FRT-MR3 triggers online?
Glockswitchmarket (glockswitchmarket.com) carries the FRT-MR3 with same-day shipping from Meridian, MS.
How does the FRT-MR3 compare to the FRT-15L3?
The FRT-MR3 is specifically designed for HK MR platforms, while the FRT-15L3 fits standard AR-15 pattern rifles.
What’s included with the FRT-MR3?
The kit includes the trigger, anti-walk pins, screws, and both A1 and A4 selector drums.
Is the FRT-MR3 legal in my state?
Firearm laws vary by jurisdiction. Consult local regulations before purchasing.
How difficult is installation?
Installation requires basic armorer skills. We recommend professional installation if unsure.
What’s the warranty?
The FRT-MR3 comes with a 1-year manufacturer warranty against defects.
Can I use this in a pistol configuration?
This trigger is designed for rifle platforms only.
✅ Same-day shipping from Meridian, MS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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This review is based on hands-on testing and installation experience with the FRT-MR3 trigger system. As a certified armorer with 18 years in the firearms industry, I evaluate components based on durability, precision, and real-world performance.
Last updated: May 2026
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