Battlefield Hardline Operator Syndicate purchase weapons/gadgets wont unlock

Hi, im going for the operator syndicate assignment, and its asked me to purchase 10 original operator specific guns and gadgets, so i went to the customize page out of game and purchased all carbines, assault rifes and gadgets. but its still showing as not completed. ive tried going in game and equiping each weapon then redploying with a new one for every carbine and assault rife i bought and i swapped a couple gadgets around but nothing is working. ive unlocked everything else as they are all ticked. the gold service star 1. operator assignment 2. its just the purchase weapons one that wont unlock. pls help