Go pick yourself up a stripped AR lower for about $100. Nothing simpler than a hunk of metal. Then you can slowly built it with whatever parts you like.
Why don't you pick up a smith and Wesson ar15 sport...it's about $700 with tax brand new with warranty...doesn't have all the bells and whistles of $$$ rifles but it'll get the job done
I have a Romi Ak 47 that been made to look like an Afghan battlefield pick up for $500.00. I'll throw in 2 filled plastic mags and a 100 rds. I'll send you a pic by iPhone.
Go pick yourself up a stripped AR lower for about $100. Nothing simpler than a hunk of metal. Then you can slowly built it with whatever parts you like.
Or you could pick up a Moison for now for under $200 and have a solid reliable firearm for now... and save for a gun you're going to be truly happy with later.