Step 1 :
Step 1 First you have to buy z8 points
Step 2 :
Step 2 Then after you buy z8 points go to the item mall and if you go to gp charging items and on all the items it should say bonus points buy a item which has bonus points?
Step 3 :
Step 3 You have to have enough bonus points to buy any bj items including ak silver and by the way when you buy the ak silver you get to keep it forever.
Email me :
Email me Email me at safi@live.co.uk if I helped you or you can go to www.crossfirehacks123.yolasite.com