Quiet Cool (1986)

Joe Dylanne, a tough New York City police officer, is summoned to Northern California at the behest of Katy Greer, an old flame. Katy desperately needs Joe's help after the brutal killings of much of her family at the hands of rural marijuana dealers. Upon arriving in the area, Joe discovers that local law enforcement isn't helpful, and he must team up with Katy's survivalist nephew, to take down the murderous criminals.