A cane gun is a walking cane with a hidden gun

Gun

A gun is a muzzle or breech-loaded projectile-firing weapon. There are various definitions depending on the nation and branch of service. A "gun" may be distinguished from other firearms in being a crew-served weapon such as a howitzer or mortar, as opposed to a small arm like a rifle or pistol,...

 built into it. Cane guns were used as last-resort emergency weapons. Cane guns now are very rare to find and are mostly in the hands of private collectors and museums. Cane guns are usually fitted to fire large handgun type cartridges or large shotgun cartridges like the 12-gauge which is perfect for low pressure conditions of normal guns and excel in the high pressure conditions of a cane gun , with each cane gun holding a single cartridge, usually a high power type. Other types of cane guns are blow dart cane guns and flare gun canes. Some versions are silenced and can blow out a spine. The cane gun was made famous in Ian Fleming's novel Casino Royale

Casino Royale

Casino Royale may refer to:*Casino Royale , the first James Bond novel by Ian Fleming*"Casino Royale" , a 1954 television adaptation of Fleming's novel for the series Climax!...

.

Damage

Cane guns are extremely powerful and are probably one of the most powerful types of shotguns around producing way more power than that of Combat shotgun

Combat shotgun

A combat shotgun is a shotgun that is intended for use in an offensive role, typically by a military force. The earliest shotguns specifically designed for combat were the trench guns or trench shotguns issued in World War I...

and are destructive in close quarters.