Certainly a less expensive or even cheap shotgun would work as well in the rig.
For what they had in mind I would have just built a big plate with smooth seamless tubes and a firing pin receiver for each one. All you need is an 18” tube, two dozen would work, some plumbing parts, actuators to select which tube to fire.
Certainly a less expensive or even cheap shotgun would work as well in the rig.
Apparently the 'hunter' was more concerned with the reliability and fast firing rates that Benellis are famous for than the cost. Six guns, all with extended mags sounds like he was expecting a visitor with significantly better armor than what a standard-issue wild hog is equipped with. Then again, maybe he likes his pork minced.
A piece of 3/4” pipe would do, with the proper firing pin set up.
Since it’s “remote”, safety isn’t that big of an issue.