My favorite drop-in - OpticsPlanet Exclusive RISE Armament Limited-Edition RA-140 Super Sporting Trigger with Anti-Walk Pins

The RA-140 is my favorite drop-in trigger for custom AR builds, especially for AR pistols / PDWs. Clean, crisp, and light...but not TOO light. And BONUS! The Optics Planet Exclusive version was about 20% cheaper than the other versions of this excellent trigger! I'm not a "logo wear" kind of guy, but you can't see the logo once it's installed, so no worries!