Medication Injector Prop?

[pseudodigm]

Not *precisely* a weapon, but along those lines. I hope it's ok.

At any rate, I've recently received an airsoft cleric pistol for my birthday, and I already had an android watch. Now I'm thinking I might as well flesh this out and finish a costume. The clothes is pretty easy (though not cheap) but the thing I'm really having trouble finding is what they used as a prop for the Protium injector.

It appears to almost work like a little gun but kind of looks like a butane torch. I guess it could just be completely manufactured for the movie, but I hold out hope it's just something I could find and modify.

Any ideas?

Thanks!

[Aedh]

The beauty of it is that you can hardly see the PIU when it's being used, being almost entirely enclosed in the hand. You can see that that is the case by checking some of the production photos such as these here.

I should think that for a cheapo quick prop you could get away with using a digital tyre pressure gauge like this one.