I'm surprised no one posted a photo of the Strayer Voigt TIKI-T Crockett carried in the 2006 movie.
Deliver Us From Evil sets up the "Burnett" arc where Sonny simply turns evil because of "Amnesia". Highly unlikely outside of soap operas. A more honest arc would have the bitterly disillusioned and suicidally depressed Crockett simply seduced into the all consuming hedonism of the lifestyle, much like the FBI agent (Ed O'Neil)in the season 1 opener Heart of Darkness.
Since Amnesia is not a defense to a crime, certainly not multiple murders widely committed over time, the show should have ended with Crockett in jail or shot dead.
My personal preference would have been to end it on a shock-the murder of Tubbs in the lighthouse. I think that would have put an exclamation point on the futile and essentially nihilistic essence of the "Drug War" in the 80s.
Let's not forget Crockett went to a S&W 6906 as backup around season 4 after he used the Detonics to get that Viking Biker from Hell off him.