Rare Breed FRT-15L3® (FLAT) Single-Stage (3-Position) Forced Reset Trigger for the AR-15
The official Rare Breed FRT-15L3® (FLAT) — a single-stage, flat, 3-position (Safe / Semi / FRT®) forced reset trigger for the AR-15, 100% made in the USA. Drop-in, duty-grade and backed by our warranty. Buy the original FRT trigger for sale direct from the patent holder.
$450.00
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Description
Rare Breed FRT-15L3® (FLAT) — flat-shoe AR-15 forced reset trigger
The same proven single-stage Rare Breed FRT mechanism, now with a flat trigger shoe. The FRT-15L3® (FLAT) is a drop-in, duty-grade 3-position FRT trigger (Safe / Semi / FRT®), 100%% made and assembled in the USA. Shooters who want a straighter finger position, more leverage and a repeatable press choose the FLAT — an authentic flat forced reset trigger for sale from the patent holder.
How the forced reset trigger works
In FRT® mode, the FRT-15L3® (FLAT) uses your firearm’s own cycling to drive the trigger forward into its reset position after every shot — so your next round is ready almost as soon as the gun is. The result is a dramatically faster, smoother and more consistent shooting cadence than a standard trigger. Crucially, it stays fully semi-automatic: the trigger fires one round per pull of the trigger, every time, and must fully reset before it can fire again. Want the details? Read what a forced reset trigger is and how a forced reset trigger works, or go deeper on the FRT mechanism.
Innovative design and features
- Flat trigger shoe: a straighter face for added leverage and a consistent, repeatable press.
- Single-stage, 3-position functionality: Safe, Semi and FRT® modes via an ambidextrous selector.
- Drop-in installation: fits mil-spec AR-15 lowers with included anti-walk pins — no gunsmithing required.
- Range-ready: fast, even follow-up shots for competition and training.
Specifications
| Platform | Standard mil-spec AR-15 lower receivers |
|---|---|
| Caliber | 5.56 / .223 Rem and 300 BLK |
| Trigger type | Single-stage forced reset trigger |
| Modes | 3-position: Safe / Semi / FRT® |
| Trigger shoe | Flat |
| Pull weight | ~4.5–5 lbs (Semi) · ~6.5–7 lbs (FRT® mode) |
| Selector | 3-position ambidextrous |
| Origin | Designed & assembled in the USA |
What’s in the box
- 1 × FRT-15L3® (FLAT) trigger
- 2 × anti-walk pins
- 4 × anti-walk pin screws
- 1 × selector drum
- 2 × selector levers (1 long & 1 short)
- 2 × T10 Torx selector lever screws
- 2 × T10 Torx wrenches
Choose your FRT-15® configuration
Prefer the classic curved feel? See the standard FRT-15L3®. Want the Mil-Spec selector? See the FRT-15L3® (MIL). Ready for two-stage control? Compare the FRT-15C3® (FLAT) and read single- vs. two-stage.
Why buy your FRT-15L3® (FLAT) direct from Rare Breed Triggers
When you buy direct, you get the genuine article — not a counterfeit or a grey-market copy. Rare Breed Triggers is the exclusive licensee of the U.S. patents behind forced reset trigger technology, and we pioneered the category with the original FRT-15®. Every FRT-15L3® (FLAT) FRT trigger for sale here is 100% designed, manufactured and assembled in the USA, backed by our limited warranty, and shipped fast from the patent holder. Beware of fakes: if it isn’t from Rare Breed, it isn’t a real FRT®.
Legal & shipping
Forced reset triggers are legal under federal law following Rare Breed’s court victory and 2025 settlement with the United States — see our FRT legal status for the full picture. Some states restrict FRTs, and we do not ship to those jurisdictions; it is your responsibility to know your local laws. Review our FAQs before you order. (General information, not legal advice.)
Buy the FRT-15L3® (FLAT) online
Ready to upgrade? Add the FRT-15L3® (FLAT) to your cart and buy direct from Rare Breed Triggers — the original FRT trigger for sale, in stock and shipping fast. Browse the full AR-15 forced reset triggers or the complete lineup of FRT triggers for sale to find the right trigger for every firearm you own.
