The FRT-15 E3 is the enhanced 3-position forced reset trigger for the AR-15 — a drop-in trigger with Safe, Semi and Forced Reset modes that resets after every shot while firing one round per trigger pull. It sits within the full Rare Breed FRT lineup and pairs a light, crisp trigger feel with forced-reset speed for shooters who want both precise semi-auto control and fast follow-ups in one selector.
Legality: the FRT-15 E3 fires a single round per pull and, after the May 2025 DOJ settlement, is not classified as a machine gun under federal law. State and local laws vary, so verify yours before buying. You must be of legal age and eligible under federal, state, and local law to purchase.
The E3’s standout is a crisp ~3 lb pull weight for a clean, light break in Semi mode, with the forced-reset mechanism delivering fast, controlled follow-up shots in Reset mode. It is one of the most refined FRT triggers for sale we carry, and the 3-position selector lets you move between Safe, Semi and Forced Reset to suit precision shooting or faster strings.
Specifications and fitment
| Spec | Detail |
|---|---|
| Platform | AR-15 (MIL-SPEC lower) |
| Selector | 3-position (Safe / Semi / Forced Reset) |
| Pull weight | ~3 lb |
| Pins | Anti-walk included |
| Bolt carrier group | Full-auto-compatible required |
| Trigger shoe | Curved or flat |
| Manufacturer | Rare Breed Triggers |
Drop-in, no gunsmithing
Installation is plug-and-play on a MIL-SPEC AR-15 lower, with included anti-walk pins for a secure, stable fit. Like the rest of the AR-pattern line, the E3 is designed to run with a full-auto-compatible bolt carrier group. Choose a curved or flat trigger shoe.
Frequently asked questions
How is the E3 different from the L3? Both are 3-position FRTs; the E3 is tuned around a lighter ~3 lb pull, while the FRT-15L3 runs a 4–4.5 lb single-stage semi.
What does it need to run? A MIL-SPEC AR-15 lower and a full-auto-compatible BCG; many builders add an H2/H3 buffer for smoother cycling.
Is it legal? Federally legal after the 2025 DOJ settlement; check your state law.
Ready to upgrade? Add the FRT-15 E3 to your cart above.







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