This is true for later models, and certainly the Fabrique Nationale marked guns, but I'm not sure about early ones.
Looking at the stock (not high, like my 1931 guns were) and lacking the the Non-Crossfire vent rib, I'm a little skeptical.
On later guns, the "C", "T", or "P" was usually way up under the head of the toplever, often hard to see...that doesn't mean the "P" on this one doesn't indicate trap, because if there's one thing that's certain: there are all sorts of Superposeds out there that don't follow "the rules."
