Rare Breed FRT-15L2 Trigger

The Rare Breed FRT-15L2 Trigger provides a mechanical forced reset that maintains legal semi-auto function while reducing lock time between shots—no binary action or full-auto conversion required.

What you get

• FRT-15L2 forced reset trigger assembly (drop-in ready)
• Anti-walk pins included
• 2-position selector (Safe/Forced Reset)
• CNC-machined from heat-treated tool steel
• Hard-coat anodized finish
• Designed for mil-spec AR-15/M16 lower receivers

Build and finish

The FRT-15L2 uses a proprietary sear geometry that mechanically resets the trigger after each shot while maintaining full compliance with ATF regulations. The trigger and hammer are CNC-cut from S7 tool steel, hardened to 50-52 HRC, then finished with a Type III hardcoat anodizing that withstands carbon buildup better than nitride or phosphate coatings.

Unlike cassette-style triggers, the FRT-15L2 installs using standard AR-15 pin locations and includes anti-walk pins to prevent lateral movement. The forced reset mechanism operates through precise sear engagement angles rather than springs or electronic components—this translates to consistent performance across temperature extremes and dirty conditions where other trigger systems might fail.

Compatible platforms

• Mil-spec AR-15 lowers (forged or billet)
• Polymer lowers with reinforced trigger pin areas
• M16-pattern full-auto lowers (functions as semi-auto only)
• Not compatible with drop-in cassette systems or non-standard fire control groups

Installation notes

Installs like any mil-spec trigger group using the included anti-walk pins. Requires standard AR-15 disconnector spring and hammer spring. Test function with safety checks before live firing—the forced reset mechanism changes trigger feel compared to traditional semi-auto triggers.

For builders working with Polymer80 or other modular frames, the FRT-15L2 offers a way to optimize reset speed without modifying the lower receiver itself. Pair it with an adjustable gas block and quality buffer system to balance cycling with the trigger’s rapid reset characteristics.