You can’t pick up Enemy Weapons Co-op in Warface

I was playing the free to play game called Warface. I have realize in the Co-op mode you can’t pick enemy weapons in the mode at all. I found this truly annoying when you ran out of ammo. To make matter worst if have choose Engineer, Sniper, Medic class you can’t rearmed ammo for guns including yourself, and also your team-mates. Co-op mode does have checkpoints where full up your ammo. There is a number of times where have ran out ammo. I’m so far away from checkpoint me or none my fellow team-mates choose the solider class. I would love to see the creators put feature in co-op where you can pick enemy weapons in co-op.