Alright guys, got my 1st evil black rifle. I'm an experienced shooter, just not with AK style guns. The gun came with a little cleaning kit, cleaning rod, and a little plastic bottle. First of all, I am looking forward to testing and shooting this little gun. My main question is this; what the devil is this little plastic bottle for? Was it supposed to have oil in it? Any other info I should know about the gun would be appreciated. Thanks.