Alright, so this is referring to an airsoft gun and it sounds odd, but trust me its all math here.
So the rate of fire of this gun with a plastic slide is ~100g; using gas that is 100-110psi, it is 1150-1300 rounds per minute.
The rate of fire of this gun with an aluminum slide (plus some upgrades) is ~130g; using gas that is 130-150psi, it is 1000-1250 rounds per minute.
So, what would the rate of fire be with a slide that is ~200g; using gas that is 160-210psi?
So the rate of fire of this gun with a plastic slide is ~100g; using gas that is 100-110psi, it is 1150-1300 rounds per minute.
The rate of fire of this gun with an aluminum slide (plus some upgrades) is ~130g; using gas that is 130-150psi, it is 1000-1250 rounds per minute.
So, what would the rate of fire be with a slide that is ~200g; using gas that is 160-210psi?