There are several jokes/references to sex. There is an episode about Brothels. David Carradine makes most of the jokes. He mentions about some old west characters being "kinky"

Reenactments contain various degree of violence & blood. PG-13 level. Some of the violence is graphic.

There is a LOT of profanity. Some of the profanity is mild, while some is very strong. Most of the profanity is said by David & Keith Carradine

Alcohol & Smoking are shown in the series. Some episodes talk about drugs that existed in the wild west.