A'm i lucky or is this common?

Well i had 10 k zp. So therefore i spun 10 kriss/ak47 Halloween crates. And i won the ak on my 5th crate. But, out of those spins i saw at least like 7-8 or 8 on the wheel. A'm i lucky or is it common?
(I saw the ak47 Halloween at least 7 or 8 times not on the same spin but all together.)
http://yfrog.com/5ycrossfire201010170000px