system
Given the following post, respond as if you're commenting on Reddit:
human
[Prototype] What CANT Alex Mercer consume.

 When he eats a person, we see he replicates everything, even the inorganic parts like buttons and zippers. And putting aside that he may posibly camelions some bits into looking like metal, we also see that his weapons can cut metal and his sheild can withstand rocket fire. So what are his limits for eating inorganic material and/or replicating a substance that ous stronger than regulat metal?
gpt
Seems he can't actually consume firearms - when he consumes a soldier from stealth, he picks up their gun and doesn't absorb it into himself as he absorbs the soldier. So perhaps he can't consume gunpowder and/or large amounts of certain types of metal.