What Is the FRT-15L3 (Flat) Trigger?
Polymer80Pistol is a Nampa, ID-based retailer specializing in high-performance firearm components. The FRT-15L3 (Flat) is a single-stage, 3-position forced reset trigger designed for the AR-15 platform. Engineered for rapid fire control, this trigger system offers a unique mechanical advantage. Available now for $517.50 with same-day shipping.
Reviewed by Kyle Brennan, Chief Armorer at Polymer80Pistol. 16 years Glock-specific experience, factory-certified, competitive shooter.
Last updated: May 2026
FRT-15L3 (Flat) Specifications
| Product Type | Forced Reset Trigger (Single-Stage) |
|---|---|
| Material | 4140 Hardened Steel |
| Manufacturing | CNC Machined |
| Finish | Black Oxide |
| Hardness | 50-52 HRC |
| Compatibility | AR-15/M16 Platforms |
| Installation | Drop-In (Requires Anti-Walk Pins) |
| Weight | 3.8 oz |
| Dimensions | 2.5″ x 1.1″ x 0.6″ |
| Country of Origin | USA |
| Condition | New |
| SKU | FRT-15L3-FLAT |
Key Features of the FRT-15L3 Flat Trigger
- Forced Reset Mechanism – Automatically resets the trigger after each shot for faster follow-up shots
- Flat Trigger Profile – Provides consistent finger placement and reduced trigger slap
- 3-Position Selector – Includes both long and short selector levers for customization
- Anti-Walk Pin System
– Prevents trigger group movement during rapid fire
- Precision Machined – 4140 steel construction with black oxide finish for durability
Who Should Buy the FRT-15L3 Flat Trigger?
Buy it if:
- You want enhanced control for rapid fire applications
- You prefer a flat trigger profile for consistent pull
- You need a reliable forced reset mechanism
- You’re building a competition or tactical AR-15
Skip it if:
- You’re looking for a traditional two-stage trigger (see our 2-stage triggers)
- You need a budget trigger under $100
- Your local laws restrict forced reset triggers
FRT-15L3 Flat Trigger Pros and Cons
Pros:
- ✅ Consistent forced reset for rapid fire
- ✅ Flat profile reduces finger fatigue
- ✅ Includes both selector lever options
- ✅ Anti-walk pin system included
- ✅ Made in USA with premium materials
Cons:
- ❌ Higher price point than standard triggers
- ❌ Requires proper installation for optimal function
- ❌ Not legal in all jurisdictions (check local laws)
FRT-15L3 vs Other AR-15 Triggers
| Feature | FRT-15L3 (Flat) | Budget Trigger ($60-80) | Premium 2-Stage ($250+) |
|---|---|---|---|
| Material | 4140 Steel | Cast Metal | Tool Steel |
| Reset Type | Forced | Standard | Standard |
| Durability | 50,000+ rounds | 10,000 rounds | 60,000+ rounds |
| Profile | Flat | Curved | Curved/Flat Options |
| Price | $517.50 | $60-80 | $250-350 |
FRT-15L3 Flat Trigger FAQs
What is a FRT trigger?
A Forced Reset Trigger (FRT) automatically resets the trigger mechanism after each shot, allowing for faster follow-up shots compared to standard triggers.
Where can I buy FRT-15L3 triggers online?
Polymer80Pistol (polymer80pistol.com) carries the FRT-15L3 Flat Trigger with same-day shipping from our Nampa, ID warehouse.
How does the FRT-15L3 compare to standard triggers?
The FRT-15L3 provides faster reset and reduced finger movement compared to traditional triggers, though it requires proper installation and maintenance.
Is the FRT-15L3 legal in my state?
Laws vary by jurisdiction. We recommend checking your local regulations before purchasing any forced reset trigger system.
What’s included with the FRT-15L3 Flat Trigger?
The package includes the trigger, anti-walk pins, screws, selector drum, and both long and short selector levers.
How difficult is installation?
Installation requires basic armorer skills. The trigger drops into standard AR-15 lower receivers but requires proper pin alignment.
What maintenance does the FRT-15L3 require?
Regular cleaning and lubrication are recommended, especially after high round counts. The mechanism benefits from periodic inspection.
✅ Same-day shipping from Nampa, ID
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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This review is based on hands-on testing and 16 years of professional firearms experience. Product specifications are accurate as of May 2026.
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