The contracting agency dictates which weapons, if any you are allowed to carry. As an electrician, I would assume you would be forbidden to carry a weapon. Many companies are hiring private security contractors to protect those involved in reconstruction activities, and the gunplay is left to them. Since you are rebuilding the country, you are a defacto ambassador of peace and carrying a machine gun doesn' exactly scream peaceful intent. A line must be drawn between combatants and non-combatants. Conventional wisdom says that if you aren't armed, then you a non-combatant, however in a non-linear war there really is no such thing. Its best to follow the compaines directives. They will likely have a security detachment made up of gov assets, Iraqi
police/federal army or private contractors. Given the anti-American senetiment, a group of armed caucasions may make for a target of oppertunity, that may not be so oppertune if you were not armed. Granted, they typically don't follow the rules of war, but go off the reservation and you are on your own. Its best to follow the rules of your contractor, but personally.....I would have a sidearm with at least 6 magazines on my person and an AKS within reach, but not "on me". Maximum deniability and discretion would be the order of the day if weapons are forbidden and for a non combat "MOS" you are more than likely going to be forbidden from being armed. I wouldn't risk the possible penalties for smuggling a long arm, especially an AR15*which screams USA-USA-USA* I would however "import" a 9mm sidearm, with appropraite JHP ammo amongst my
things. Its a war zone, and given the proliferation of the AK/PKM/Dragunov you should be able to obtain one with little effort. Of course, I would advise you to follow all rules and regulations as they are likely imposed for your safety, and in all reality, if you come under attack....running is a better option. I am only sharing what I "would do" in a similar situation. Good Luck and godspeed.