Save up for something like this:
http://www.gandrtactical.com/cgi-bin...ion&key=311054
A Colt 6920 would be great as well. I would regard your Bushy carbon 15 as a cheap Chinese copy of an ar15 (though it is made in the US).
I don't say this often, but you should EXPECT it to fail.
There are many good options and we'll do our best to supply them to you. Do your best to unload it...the climate is still right for that.

