The ‘Weapon Bench’ allows players to combine a variety of items (frames, engines, adapters) to forge different weapons. You can also add two different items onto a single weapon to deal two different kinds of damage.
For example you can add two separate engines (electric and fire) onto one gun. Once done the gun will deal both kinds of damage. So you are now ready to fry and shock the aliens to a crisp.
You can come up with your very own combinations or else follow blue prints to designated weapons.