The Knock Out Cop
Piedone lo sbirro (original)
This cop doesn't carry a gun - his fist is loaded!
Starring Bud Spencer, Adalberto Maria Merli, Raymond Pellegrin, Juliette Mayniel, Mario Pilar, Enzo Cannavale, Angelo Infanti, Jho Jhenkins, Salvatore Morra, Franco Angrisano
It's a action & adventure and crime movie, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United States.