Rise Armament makes some of the best and most affordable drop in triggers available. Rise drop in triggers make upgrading your AR easy and affordable. A great trigger upgrade is something you will notice both in feel and accuracy and are one of the best upgrades you can do.
MMC Combos AR-15 Trigger Upgrade Kit Including the Rise Armament "Glen" Trigger + KAK LPK + Anti Walk Pins
MMC Combos RISE Armament Blitz Elite Performance Trigger, Anti-Walk Pins, Black + KAK AR-15 "Lite" Lower Parts Kit
MMC Combos RISE Armament High Performance Trigger, Black, Anti-Walk Pins + KAK AR-15 "Lite" Lower Parts Kit