This is a purely hypothetical question. Suppose someone shooting A-C wanted to use a full-size Glock in the Five and M, but wanted to shoot the Plates with a compact model (which would also be legal in A-C). The entry form asks for the Glock model to be used in a division, but I don't recall anything in the GSSF rules which would mandate that only the model on the entry form be used in a division. Would this be legal? If so, has anybody done it?