Saiga will work within the $1000 budget.
Rifle NIB: $525
RAA Skeleton stock: $75
3 15 rnd Surfire mags: $110
POSP 6x24 V: $155 + SH
What you get is a .308 that will feed, fire and eject until you run out of ammo. A 2-3 MOA. Yeah, the stock trigger is beyond lousy, but you can get used to it. It's the Timex of semi-auto larger caliber rifles. (450 rounds of all types of cheap ammo and no failures of any type so far. Shot 200 rounds, didn't clean it and fired the other 250 two weeks later just to see). If I had more money to spend, I'd 86 the RAA stock, spend the $'s on Dinzag's FCG conversion and put a pistol grip and different stock. BUT, as it is, I'm just fine with it. Anything beyond 400 yards is bolt action territory anyway, even if the round is capable of reaching out there. (I'm not that good anyway).
I almost went with the CETME, but it's used and a Century refurbish. Probably a better rifle NIB before CAI got their hands on it, but used? Your choice.