Giuseppe Vari's first foray into the genre is styled like a classic US Western but is very much a transitional title. The siege scenario and the blandness of Giacomo Rossi-Stuart's hero (I really can't warm to that actor at all, certainly not in lead roles) belong to an earlier era, while Dan Vadis' over-the-top bandido points towards new-fangled European excess.
It's OK, with the strength of some of the secondary performances - especially Daniele Vargas, José Torres and Riccardo Garrone as the other principal good guys - compensating for Rossi-Stuart's stolidity. Actually, it's one of those films where communal endeavour triumphs rather than lone heroism - just as well, as Rossi-Stuart is incapacitated halfway through and proves of little use.
Possible spoiler: one particularly daft scene early on has Rossi-Stuart, who has ridden into town after bandits have killed his father on their ranch, break up a fistfight in the saloon before casually announcing the murder to the sheriff, almost like an afterthought. Very sloppy writing.