Andrew Mountbatten-Windsor is understood to have voluntarily surrendered his gun licence after a visit from the Metropolitan Police.
Officers attended the former prince's Royal Lodge residence in Windsor last month, ahead of his expected house move in the new year.
A Met Police spokesperson said: "On Wednesday, 19 November, Metropolitan Police firearms licensing officers attended an address in Windsor to request that a man in his 60s voluntarily surrender his firearms and shotgun certificate."
The force said the certificate was surrendered but did not comment further.
It is not clear why the former prince - a known hunting enthusiast - gave up his licence, but the decision means he can only use or transport his guns if supervised.
