I can't believe noone has brough up Tom Selleck's other movies. Crossfire Trail is a good, Last Stand at Sabre Creek that plus a man dealing with the horrors of a war.
Serny99, most westerns were made back before pro-gun was a issue.
The Rifleman had an esisode that dealt was gun control, A sub. sheriff was appointed while Macha was gone. Someone pulled a gun and shot into the air. The sheriff ordered all guns to be placed into the sheriff's office. And a band of outlaws ride into and put the sheriff in a jail cell. Lucas ride into town, being the only one who don't turn in his rifle, and ends the problem. The town was safe because, every man was well armed and ready to back the sheriff at the drop of a hat.