A Matter Of Life And Death Iron Maiden

A Matter of Life and Death – Iron Maiden – What types of weapons are they?

I wonder what type of weapon used. You can see a picture http://www.fearshop.com/imagesp/039-157-022.jpg of weapons here if you do not know the CD cover of "A matter of life or death, or if you do not know shirt. I would be happy if someone could help me! Thank you! And if not, these weapons that fire? Or are unprepared? I'm not much of a expert, thank you!

They resemble a pair of M-16, but I'm not an expert.