yes you need an adapter. There are 3 different ones available.
go to www.hotshotpaintball.com
They have 2 different adapters, and all the drops you need. I recommend the Bullet drop.
And you might want to consider a bigger air tank, you might see 400 shots with your current setup. A 68/3000 is the smallest tank I recommend. While a 68/4500 is optimal....