Handgun and magazine therefor

A handgun comprising:

• a frame with a grip portion configured to be grasped by a user and defining a magazine well, the grip portion comprising:
• a web region configured to be grasped by a user between a thumb and an index finger, a forward portion of the web region defining a first width;
• and
• a palm region configured to be grasped by a user's palm, the palm region defining a second width greater than the first width;
• and
• a magazine configured to be received into the magazine well, the magazine comprising:
• a magazine tube having a front wall, a rear wall, a left wall, and a right wall;
• wherein the right wall and the left wall define a single-stack portion and a double-stack portion positioned below the single-stack portion;
• wherein, between an upper tube opening and the double-stack portion, part of the right wall and part of the left wall defining the single-stack portion include a stepped shape;
• wherein the stepped shape includes a first sloped portion, a vertical section, and a second sloped portion;
• wherein the first sloped portion extends downward and outward from the upper tube opening, the vertical section extends downward from the first sloped portion, and the second portion extends downward and outward from the vertical section;
• and
• wherein the stepped shape is configured to retain at least two cartridges in a single, descending column between the left wall and the right wall.

A handgun comprising:

• a frame with a grip portion configured to be grasped by a user and defining a magazine well, the grip portion comprising:
• a web region configured to be grasped by a user between a thumb and an index finger, a forward portion of the web region defining a first width;
• and
• a palm region configured to be grasped by a user's palm, the palm region defining a second width greater than the first width;
• and
• a magazine configured to be received into the magazine well, the magazine comprising:
• a magazine tube including a lower tube portion and an upper tube portion extending from the lower tube portion to an upper tube opening, the magazine tube having a left tube sidewall, a right tube sidewall, a rear wall and a front wall, wherein the lower tube portion is configured to retain a plurality of cartridges in two offset columns, wherein the upper tube portion is configured to retain a plurality of single stack cartridges in a single vertical stack with projectiles of the plurality of single stack cartridges generally aligned in a single column along the front wall;
• the rear wall having lateral margins tapering linearly from a top of the lower portion to feed lips at the upper tube opening;
• and
• a forward portion of the left sidewall and a forward portion of the right tube sidewall including a first portion extending downward and outward from the upper tube opening, a second portion extending downward from the first portion, and a third portion extending downward and outward from the second portion to the top of the lower tube portion, wherein the second portion and the third portion each have a vertical height sufficient to accommodate one ammunition cartridge.