Flintlock's Flintlock

Here's an old British flintlock pistol. The lock plate has the traditional stamp of the TOWER arsenal as well as the Seal of King George (with G.R. for George Rex) stamped under it. The puts it in the late 1700's or early 1800's. There are a few replacement parts on this piece - one of the lockplate screws has been replaced, as has the plate on the left side of the pistol - it's now brass sheet stock that is not original. Otherwise, the pistol is in pretty good shape with a functioning action, frizzen, and ramrod.

Might this have been a pirate's pistol? A fella can dream, right?