heres and idea it might be stupid but i think it might work without messing up the balance. much like the demolitions has and option to buy extra pipe bombs the commando can have an option to increase the magazine size of his weapons without actually carrying more ammo or a heavier gun (ie. the SCAR has 12 mags at 25 rounds or for say an extra 100 pounds u can have 6 mags at 50 rounds each or 3 at 100 each). like i said might be dumb but just a thought