If you wanted to know what all the hubbub was about for the new pocket rocket from Heizer Firearms, here is a great video overview to get you up to speed on their Double Tap Pistol. In the growing frontier of lightweight well hidden CCWs, the Double Tap weighs in at less than a pound and is a minuscule two-thirds of an inch wide.
For those that like choices, you have them. Heizer Defence will offer four variations on this particular Tactical Pocket Pistol. They will provide both a titanium and aluminum version on this over under double barrel handgun, and the ability to have ports included or excluded depending on if you want to pay the premium to cut down on muzzle rise and recoil.
The barrel is interchangeable from .45 ACP to 9MM. Pricing starts at $499.99 for the base model in Aluminum up to $799.99 for the lightest Titanium version along with porting. This is certainly not for the shooter with ammo to spare, but you can stick two rounds in the grip if you can quick load assuming the first two rounds don't end up on target.