https://www.22mods4all.com/rare-breed-frt-15-ar-15-drop-in-adjustable-trigger/

***VERY LIMITED***
PRODUCT DESCRIPTION

 IN STOCK (LIMITED) - Ships TODAY

Specs

  • 1/4" Wide Hammer, Trigger, and Locking Bar
  • 7075-T6 Aluminum Housing
  • Precision Wire EDM Cut
  • Black Nitrite QPQ Finish
  • Includes Anti Walk Pins
  • 5lb Trigger Pull
US Pat. 10514223
 
*Full-Auto Bolt Carrier Required.
*Heavy Buffer (H2, H3 or T3 BUFFER) Recommended.
*We strongly recommend a qualified gunsmith install this trigger.
*In the majority of setups, the FRT-15 is plug-n-play with a heavy buffer.  Tuning may be required.