https://dsgarms.com/ra-535-aptAlways wanted to try out a RISE Armament "Red" Trigger but the price put it too close to my preferred single-stage, Elftmann 3Gun. The RISE "Red" beats the Elf by having the shortest overtravel distance. RISE makes two models and the RA-535 is their premium model which normally priced at $249. Must be logged in to see the discounted price.
Placed my order.
Here's a review of drop-in triggers:
http://www.thetruthaboutguns.com/2016/04/jeremy-s/ar-15-drop-in-trigger-roundup/