The Colt New Service, also known as the Colt M1909, is an American revolver. This revolver is known as being the weapon introduced to fill in the gap of the US Army's service pistol from 1909 to 1911.
Over its 43-year lifespan, over 356,000 Colt New Service revolvers were produced, and it was the most popular revolver ever produced by Colt. It also has the distinction of being the largest revolver ever produced by Colt, in terms of frame size, and is known as being one of the largest production revolvers known.
The New Service is based on their prototype New Double-Action Revolver used as a control group for the 1907 US Pistol & Revolver Trials. All variants of the New Service revolver feature notched rear sights and fixed blade front sights.
An enlarged New Service chambered for .45 ACP.