Dealers of weapons to be licensed.

No retail dealer shall within the District of Columbia sell or expose for sale or have in his or her possession with intent to sell, any pistol, machine gun, sawed-off shotgun, or blackjack without being licensed as provided in § 22-4510 . No wholesale dealer shall, within the District of Columbia, sell, or have in his or her possession with intent to sell, to any person other than a licensed dealer, any pistol, machine gun, sawed-off shotgun, or blackjack.