Forum:Max Prefix?

Anyone seen this and figured it out. I've looked on the prefixes page here and it doesn't say. I never seen a gun with the prefix max and I'm wondering what it does since my friend duped me a Max Serpens and I try not to mod. Someone already told me they found one so it wasn't a mod, but now I'm wondering what it does and if it's just making my gun worse or something -- anon8792