Robert Bisaccia (AKA Bobby Cabert) was the actual shooter.

https://www.nytimes.com/1993/04/14/nyregion/witness-gives-step-by-step-description-of-killing.html

Edit- sorry misread the question. As mentioned it was Gambino he beat to death.

Last edited by meatball; 09/27/19 11:35 PM. Reason: Misunderstood op