I wanna get this straight I can get utility slot that means I can pick one more c4 or grenade in this slot and only costs 200 certs?
Grenade bandolier increases the number of 'nades you can carry and there is one (munitions pouch I think) that increases C4/mine carrying capacity. You can only equip one or the other - not both together IIRC. In both cases you sacrifice the ubiquitous nanoweave armour though. Can't remember costs.