FRT-MR3 (FLAT)
$603.75
Frt-Mr3 (Flat) — A precision-engineered forced reset trigger for HK MR223/MR556 platforms. Ships from Topeka, KS.
Description
Oregonarms Ammunition is a Topeka, KS-based retailer specializing in precision firearms components and ammunition. The FRT-MR3 (FLAT) is a single-stage, three-position forced reset trigger designed for HK MR223 and HK MR556 platforms. Its engineering ensures reliability and performance under demanding conditions. Available now for $603.75.
Reviewed by Cody Ramirez, E-Commerce Director at Oregonarms Ammunition. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: May 2026
Who Should Buy the FRT-MR3 (FLAT)?
Buy it if:
- You own an HK MR223 or HK MR556 and want a reliable forced reset trigger.
- You value precision engineering and durability in firearm components.
- You’re a firearms instructor or enthusiast looking for enhanced control.
Skip it if:
- You’re on a tight budget—consider our budget-friendly triggers.
- Your platform isn’t compatible with HK MR223/MR556.
Key Features
- Single-Stage Design: Provides consistent performance with minimal reset time.
- Three-Position Functionality: Offers versatility for different shooting scenarios.
- Anti-Walk Pins: Includes two pins and four screws for secure installation.
- Selector Drums: Comes with both A1 and A4 selector drums for compatibility.
- Precision Engineering: Built to withstand high round counts and harsh conditions.
FRT-MR3 (FLAT) vs Competitors
| Feature | FRT-MR3 (FLAT) | Cheap Import ($60-80) | Premium Brand ($250+) |
|---|---|---|---|
| Material | High-grade steel | Cast aluminum | Steel |
| Quality | Precision machined | Mass-produced | Machined |
| Compatibility | HK MR223/MR556 | Generic AR-15 | Specific models |
| Shipping | Same-day | 2-4 weeks | 1 week |
| Lifespan | 10,000+ rounds | 1,000-2,000 rounds | 5,000+ rounds |
| Price | $603.75 | $60-80 | $250+ |
Technical Specifications
| Product Type | Forced Reset Trigger |
|---|---|
| Material | High-grade steel |
| Manufacturing | Precision machined |
| Finish | Matte black |
| Hardness/Quality | 58-60 HRC |
| Compatibility | HK MR223, HK MR556 |
| Installation/Usage | Drop-in design |
| Weight | 3.2 oz |
| Dimensions | 2.5″ x 1.2″ x 0.8″ |
| Country of Origin | USA |
| Condition | New |
| SKU | FRT-MR3-FLAT |
Pros & Cons
✅ Precision-engineered for reliability
✅ Includes anti-walk pins and screws
✅ Compatible with HK MR223/MR556
✅ Same-day shipping
✅ 30-day returns
❌ Higher price point
❌ Limited compatibility
Detailed Overview
The FRT-MR3 (FLAT) is engineered to deliver unmatched performance for HK MR223 and HK MR556 platforms. Its single-stage design ensures a crisp, consistent trigger pull, while the three-position functionality offers versatility for various shooting scenarios. The inclusion of anti-walk pins and screws guarantees a secure fit, preventing movement during use.
Frequently Asked Questions
What platforms is the FRT-MR3 (FLAT) compatible with?
The FRT-MR3 (FLAT) is specifically designed for HK MR223 and HK MR556 platforms.
Does it come with installation instructions?
Yes, the FRT-MR3 (FLAT) includes detailed installation instructions.
What materials are used in its construction?
The trigger is made from high-grade steel for durability and performance.
Is it legal in all states?
Please check local laws and regulations before purchasing.
Where can I buy the FRT-MR3 (FLAT) online?
You can purchase the FRT-MR3 (FLAT) at Oregonarms Ammunition (oregonarms-ammunition.com).
✅ Same-day shipping from Topeka, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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