I think they are pro-science. The premise of the show is to test myths in a verifiable and objective way, then to engineer a way to duplicate the results of the myth, all the while providing entertainment. Once emotion is taken out of the gun control debate, and all that is left are raw statistics, and firearms without any sensational abilities, and with all the limitations in the design, it is fairly obvious that the "anti-gun" platform is deeply flawed, and erronous. I think the show speaks for itself. They are in San Francisco, if they AREN'T screaming like a girl and running away from the mere sight of a gun, they could probably be considered pro. They test more gun myths than any other type, which also probably shows more gun myths are submitted by viewers for them to test. Jamie owns quite a few himself, is very strict about safety, and seems knowledgeable in their use. Every regular on the show has fired a gun in one episode or another. The results of tests are presented fairly objectively, like the 50bmg only penetrating a foot or two of water. They visit local gun shops and ranges on the show, and always look enthusiastic and happy to be there. And all this despite the fact that their REAL job is in special effects for hollywood, where prejudice against gun owners and gun rights supporters runs fairly rampant.
I see a knowledgeable gun owner, who keeps quiet about his politics, but consistently shows guns in an objective or positive light, and a newbie, who is learning the safety rules, and getting to be a better shooter as he goes along, all in all, they are an asset to our cause.
IIRC, the narrator commented that Jamie asked a friend for a favor and that's how he got the minigun for the show. I wonder if he and Dillon have a mutual friend or if he and Dillon are friends.
With friends like that you probably won't have many enemies