I want a new gun. again. Its a G36 on airsoftgi.com made by Echo 1. It has the collapsible stock and mag well of a M4 which makes it compatible with M4 magazines. I have a M4 that doesn't work so I can use the clips from that in the G36 if I were to get it.
http://www.airsoftgi.com/product_info.php?cPath=284_287&products_id=4764
theres the link. It's 175.00$

i wont to get a m4 with a box mag. for 175 what do think??

The M4 sounds good. I dont know what kinda budget your sitting on but if you can afford a M4 for 175$ then get that and worry about the box mag later. I got a couple M4 mags so it should be compatible making it easy to reload in the field ect.. I can look up some guns and see what I can get for you.

I checked out airsoftgi.com . This is the gun I checked out.
http://www.airsoftgi.com/product_info.php?cPath=280_281&products_id=1975
It's by Echo 1 and its a STAG-15 A1 Carbine. Its out of stock at Airsoft GI now but for the moderately cheap price it should be worth the wait.

I found the gun that david b wants. Its a m4 kit that comes with a box mag and a red dot scope.

http://www.airsoftmegastore.com/PhotoGallery.asp?ProductCode=JG%2DCUSTOM%2DF6615

its a jg so its not a no name brand of airsoft gun.

Looks good to me .