A Rikers inmate pleaded guilty yesterday to trying to put out a hit on two witnesses who were going to finger him for a murder in Queens.

Gino Florencia, accused of gunning down Edison Vera in Maspeth last year, admitted planning a “murder for hire” from his jail cell with an undercover officer.

While Florencia, 32, was incarcerated, he conducted numerous conversations with the undercover, officials said.

As he admitted the murder-for-hire yesterday, he also copped to killing Vera. He is expected to get 33 years in prison.