Alright guys, I was going to replace the front site on my Bushmaster AR with a folding one, and also wanted to get a supressor down the line....but the money I'd have to pay a smith, plus the time without the rifle makes me think I should just build one. I figure I should since who knows what will happen this fall. Anyway, I found the AR15 guide to building one. http://www.ar15.com/forums/topic.html?b=3&f=4&t=226782 Doesn't look to bad, I'll have to pick up a few tools, but I'd rather do that and build one exactly like I want rather than buy one not exactly how I want it. Anyway, I'm looking for some recommendations on parts. Overall, I'm looking to spend between $700-$900(at most) for just the rifle. No optics, no magazines. Just the essentials. Is that possible? What lower would you guys recommend? Who makes the best one? I want a barrel that is already threaded for a suppressor for the future, along with no front site, so I can attach a folding front. I plan to use an optic...probably an acog or aimpoint or something. Anyway, what do you guys recommend brand wise for the lower, upper and barrel? Just looking for some guidance here. Thanks. **edit** I'd like to keep it in 5.56/223 caliber...but if there is a cheaper alternative I'll consider it.