The key word here fellas is non restricted for under $1000.
Sadly bud, the only good black rifle that can be had for that price range is an AR which is a named Restricted.
Your other decent options are the following:
Vz-58
T97NSR
There are a few others, but in mumy opinion, not worth mentioning. Both of the above rifles walk the line of being a "red rifle" as well due to thier background, but I assume you meant "tactical style" when you said Black rifle.
The Vz is the best pick up and shoot it how it is rifle in my opinion. Nothing makes it bad, but nothing makes it amazing either. Its just a sound choice for rifle in this price range.
The T97 has a lot of things that are all wrong from factory, but boasts many good attributes that lend itself to being a pretty awesome Black Rifle once fixed. The question is how much are you willing to pay to correct those issues and in the end just have a T97 chinese quality built rifle for a price boardering used Tavor territory. Some times it is cheapest just to buy once and cry once.
I highly recommend against spending to much on an SKS. I was a gun newb 3 years ago and got my first gun, an SKS. Being a Tacticool Fool, I got the ATI folding Stock, 2x tapco 5/20 mags, NC star beyonet mounted bipod, scope and scope mount, murry spring assisted firing pin and of coarse a laser. The thing weighed a ton, was unwieldy even with the folder stock, bipod was ####ty, and the mags required 3 hands to do a mag change. Scope didnt hold zero and blocked the use of stripper clips.
It was a learning curve that was costly, and only left me wanting more as time went on. Shortly there after the Vz58 swept me off my feet. Great rifle, but I strolled apon the Tavor thanks to TV-PressPass' youtube channel, and after that I had my eyes on the prize and all I could save went towards getting a Tavor. When the day finally came around to get one I was happy as a pig in mud, and as time has progressed I have only gotten happier with it with the addition of quality glass and other accessories.
Seriously consider your actions, and know that if your one of those people that is wanting a quality rig, buying once and crying once is the way to go.