Ghost Inc. Unit 3.0, Trigger Connector, Fits Glock Gen 1-5 Including X Models GHO_UNIT-3.0 This is the smoothest and lightest Drop-In Glock trigger connector made. The UNIT 3.0 includes an over-travel tab that shortens overall trigger movement. This Glock connector" in combination with its patented design for smoothness" provides for more accurate shooting and faster follow-up shots.