FRT-15L3 Forced Reset Trigger for the AR-15

Take your AR-15 to the next level with the 100% Manufactured and Assembled in the USA, 3-position FRT-15L3 Forced Reset Trigger (Safe/Semi/FRT), a drop-in, duty trigger upgrade. This system includes a 3-position, ambidextrous safety selector and anti-walk pins for a secure, hassle-free installation.

Performance on the Range
Enhance your shooting experience with the FRT-15L3 Forced Reset Trigger. Designed to accelerate follow-up shots while remaining within legal parameters, the innovative Forced Reset system resets the trigger after each shot, enabling faster, more consistent firing. Each trigger pull fires one round, ensuring full legal compliance while delivering improved speed and performance. Perfect for competitive shooting, tactical training, or maximizing your AR-15’s potential.

Innovative Design and Features

• 3-Position Functionality: The FRT-15L3 features Safe, Semi, and Forced Reset modes, controlled via a 3-position, ambidextrous safety selector. Whether you’re focused on precision shooting or rapid-fire drills, this system adapts to your needs, offering versatility for both left- and right-handed shooters.
• Effortless Installation: Designed for easy installation on MIL-SPEC AR-15 lowers, this trigger includes anti-walk trigger pins, providing secure attachment and preventing unwanted movement during extended use. The ambidextrous safety selector seamlessly integrates into any MIL-SPEC lower receiver.

The FRT-15L3 is Rare Breed Triggers’ single-stage, 3-position forced reset trigger for the AR-15 — a duty-grade, drop-in trigger that resets itself after every shot while still firing one round per trigger pull. It is the refined flagship of the Rare Breed FRT-15 family, adding a Safe/Semi/Forced-Reset ambidextrous selector to the original design.

Is the FRT-15L3 legal? Yes. It fires a single round for each pull of the trigger, and following the May 2025 DOJ settlement, forced reset triggers of this type are not classified as machine guns under federal law. State and local laws vary, so confirm yours before purchase. You must be of legal age and eligible under federal, state, and local law to purchase.

In Semi mode the FRT-15L3 gives you a clean, single-stage 4–4.5 lb pull that breaks like a quality match trigger. Flip to Forced Reset mode and the same single-stage feel carries a slightly heavier 5.5–6 lb pull, resetting the instant the bolt carrier returns to battery for fast, controlled follow-up shots. As one of the most capable FRT triggers in the lineup, its 3-position ambidextrous safety suits both left- and right-handed shooters.

Specifications and fitment

Built duty-grade

The L3 is machined from 7075 anodized aluminumand heat-treated 4140 steel, weighs about 5 oz, and installs on MIL-SPEC AR-15 lowers with the included anti-walk pins. It needs a full-auto-compatible bolt carrier group and runs best with an H2 or H3 buffer (or an A5 system). Note: it may not fit certain Colt models or lowers with a sear block/shelf.

Frequently asked questions

Why won’t my FRT-15L3 run? The most common cause is a semi-auto bolt carrier; the L3 requires a full-auto-compatible BCG. Pair it with an H2 or H3 buffer and tune your gas if needed.

Will it fit my lower? Any MIL-SPEC AR-15 lower. It may not fit certain Colt models or lowers with a sear block/shelf.

How does it compare to the two-stage option? If you prefer a two-stage break, look at the FRT-15C3; the L3 is the single-stage flagship.

Is it legal in my state? Federally legal after the 2025 DOJ settlement; state laws vary, so check yours first.

Ready to upgrade? Add the FRT-15L3 to your cart above.