British Webley 0.38in Mk. 4

  Nation: Great Britain
  Adopted:1942
  Design: Webley
  Caliber:  .38 S&W
  Capacity: 6 shot
  Action: Double-action
 

Mfg. by: Webley & Scott Limited, Birmingham

The .38 caliber ammunition made it easier to manage than the .455 caliber of it's predecessor.  Used in WWII in addition to the .38 Enfield revolvers.