well, I already have the lower assembled, I also have the upper(without barrel) and the bolt group. I would like a fore grip, and what I've contemplated is geting an inexpensive foregrip and a small piece of rail and bolting it on, and then for when I add a light, I'll put one of those doubl-rails that bolts onto the front sight block. I can shoot pretty good with irons, but due to vision problems I prefer an optic of some kind. I have an old Tasco red-dot I picked up years ago. It's held up to alot of abuse over the years I sorta pass it around on some of my other rifles I want to get something and dedicate it to this build. I have been considering a tacpoint(please don't flame me) it would look decent enough, it would work well enough and I would eventually get an aimpoint anyways, and the tacpoint seems like it would get me somewhat used to its "feel" and the price is definately tempting. As for a barrel, I would like something with an M4 profile(with the step down) and probably and A2 flash hinder. I've seen several of these typs of barrels on auctions for around 150-170 dollars. Any info on a particular brand I should get would be apreciated. Like I said, I've been working on this build for about 5 years, and I can't really spend more than about 150-180 dollars on a part in one sitting. So I'd need to buy parts and get them in 150 to 180 dollar increments. Thanks in advance you guys.