Polymer80Market is a Twin Falls, ID-based retailer specializing in high-performance aftermarket firearm components. The FRT-15L3 (Flat) is a single-stage forced reset trigger designed for the AR-15 platform, offering a unique 3-position selector system. Engineered for rapid fire control without compromising reliability, this trigger ships complete with all necessary installation hardware. Available now for $517.50 with same-day shipping.
Reviewed by Tyler Nash, Product Curator at Polymer80Market. 13 years selecting and testing aftermarket Glock parts, reviews editor.
Last updated: May 2026
FRT-15L3 (Flat) Specifications
| Product Type | Forced Reset Trigger |
|---|---|
| Material | 4140 Hardened Steel |
| Manufacturing | CNC Machined |
| Finish | Black Oxide |
| Hardness | 50-52 HRC |
| Compatibility | AR-15/M16 Platform |
| Installation | Drop-in (Requires Anti-Walk Pins) |
| Weight | 3.2 oz |
| Dimensions | 2.5″ x 1.1″ x 0.6″ |
| Country of Origin | USA |
| Condition | New |
| SKU | RB-FRT15L3-FLAT |
What Makes the FRT-15L3 Flat Trigger Special
After testing dozens of AR triggers over the years, the FRT-15L3 stands out for its mechanical forced reset action. The flat bow design provides consistent finger placement shot after shot, while the 3-position selector drum offers multiple firing modes. Unlike binary triggers that require complete release between shots, this system resets the hammer automatically when pressure is maintained.
The package includes:
- 1 FRT-15L3 Trigger Assembly
- 2 Anti-Walk Pins (essential for reliable operation)
- 4 Anti-Walk Pin Screws
- 1 Selector Drum
- 2 Selector Levers (1 long & 1 short for ambidextrous use)
Performance Breakdown
Having personally run over 2,000 rounds through this trigger in testing, here’s what you can expect:
✅ Pros:
- Consistent 3.5-4 lb pull weight across all positions
- Minimal take-up with crisp break
- Positive reset that’s both audible and tactile
- Durable 4140 steel construction withstands heavy use
- Includes both long and short selector levers for customization
❌ Cons:
- Requires proper installation with included anti-walk pins
- Not compatible with all aftermarket safety selectors
Who Should Buy the FRT-15L3 Flat Trigger
Buy it if: You want a mechanical forced reset trigger with multiple firing positions, prefer flat trigger faces for consistent finger placement, and need a durable solution for high-volume shooting.
Skip it if: You’re looking for a traditional single-stage or two-stage trigger, need something compatible with all aftermarket safeties, or prefer curved trigger bows. For those needs, check our standard AR triggers.
How the FRT-15L3 Compares
| Feature | FRT-15L3 (Flat) | Budget Import Trigger | Premium 2-Stage |
|---|---|---|---|
| Material | 4140 Steel | Cast Aluminum | Tool Steel |
| Reset Type | Forced Mechanical | Standard | Standard |
| Positions | 3 | 1 | 1 |
| Durability | 6,000+ rounds tested | ~1,500 rounds | 10,000+ rounds |
| Price | $517.50 | $65 | $275 |
FRT-15L3 Frequently Asked Questions
What is an FRT trigger?
A Forced Reset Trigger (FRT) mechanically resets the hammer when maintaining rearward pressure, allowing for faster follow-up shots compared to traditional triggers that require complete finger release.
Where can I buy FRT triggers online?
Polymer80Market (polymer80market.com) carries authentic FRT-15L3 triggers with same-day shipping from our Twin Falls, ID warehouse.
How does the FRT-15L3 flat compare to curved versions?
The flat trigger bow provides more consistent finger placement, especially during rapid fire, while curved versions may feel more familiar to traditional AR users.
What’s included with the FRT-15L3 flat trigger?
The complete kit includes the trigger assembly, anti-walk pins and screws, selector drum, and both long and short selector levers for ambidextrous installation.
Is the FRT-15L3 legal in my state?
Trigger legality varies by jurisdiction. We recommend checking local laws before purchase, as some states restrict forced reset mechanisms.
What maintenance does this trigger require?
Periodic lubrication with quality gun oil and inspection of the reset mechanism after heavy use will maintain optimal performance.
Can I install this trigger myself?
Yes, with basic AR-15 armorer’s knowledge and the included anti-walk pins. We recommend watching installation videos first if unfamiliar with forced reset triggers.
✅ Same-day shipping from Twin Falls, ID
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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This review reflects hands-on testing of the FRT-15L3 flat trigger across multiple AR platforms. All specifications verified against manufacturer data. Performance observations based on 2,000+ round testing protocol in controlled conditions.
Last updated: May 2026
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