you can't. at least unless you've actually seen one i've never seen a gun that cheap made with metal. metal's a high quality thing in the airsoft world and there is NO decent gun for under 100 bucks. i know that UTG makes a PERFECT ak47. exact replic...
Get a job and buy it on your own. Not only will you have your airsoft gun but it will prepare you for the future.
Just at a guess but since the middle east is in a state of or very near too war would it be wise to be toating arround a millitey simulation airsoft gun? ( I do not know of any airsoft guns that do not mimic real hardware) I will say this...If it is ...