Tyrant CNC Springfield Echelon I.T.T.S Trigger Black. tyrantcnc.com/designed-for/springfield/echelon-i-t-t-s-trigger.html Specifications for Tyrant CNC Springfield Echelon I.T.T.S Trigger: Manufacturer: Tyrant CNC Color: Black Gun Make: Springfield Armory Gun Model: Springfield Armory Echelon Package Contents: Tyrant CNC Springfield Echelon I.T.T.S Trigger What firearm models does the manufacturer say Tyrant CNC Springfield Echelon I.T.T.S Trigger is compatible with? The manufacturer says that Tyrant CNC Springfield Echelon I.T.T.S Trigger is compatible with Springfield Armory EchelonTyrant CNC TD-ECHETRIG-BLK/BLK: Springfield Echelon I.T.T.S Trigger Black