Kidd 2 stage trigger.
Our design cycles fine with sub-sonic ammo. Though, it is not specifically designed to function with less pressure. We do sell a cocking assembly with tuning springs. One of the springs has 10% less tension then the OEM, which will help cycling with sub-sonic. 70 30 is about as far as you can go with it
[ame=http://www.youtube.com/watch?v=sHy2rlTbzis]KID 10/22 Trigger Op - YouTube[/ame]