Jack is a rare knife that could be obtained during the Halloween Bingo Event 2015. It can now only be obtained by trading, since the event has ended.
After a successful purchase, you will be automatically redirected to a page to enter your ROBLOX username and be prompted to join our private server in MM2. You will then see an invitation for a trade(s) to receive your items. If you're confused, please watch the video at the top of our home page!