In 1876 the Colt Patent Firearms Company introduced a double-action (DA) revolver developed by their chief engineer, William Mason- the Colt "Lightning", or Model 1877, in .38 caliber. Colt offered the revolver to the Army but it was turned it down because of its small caliber and fragility.

A revolver is a repeating handgun that has at least one barrel and uses a Most double-action revolvers may be fired in two ways.

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In the double-action mode, the revolver is fired simply by pulling the trigger through its long double-action arc when it is pointed at the 

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Double-action revolvers allow the hammer to be cocked and released with a single pull of the trigger. Most double-action revolvers have the capability to 

Ruger® GP100® double-action revolvers are among the most comfortable shooting revolvers. · Triple-locking cylinder is locked into the frame at the front, rear 

7 Sleek Double Action Pistols Every Shooter Needs 1. Beretta 92X Compact Though Beretta 92X Compact is not the easiest double-action pistol to carry around due to its size, it is way easier to wield than your standard 92FS. Moreover, the 92X series is packed with upgrades which makes it n exceptional piece.

Double action (or double-action) refers to one of two systems in firearms where the trigger both cocks and releases the hammer . Double-action only (DAO) firearms trigger: The trigger both cocks and releases the hammer. There is no single-action function and the hammer will return to its decocked position after each shot.

Three years after Colt introduced the Model 1878, Smith & Wesson came forth with their first double-action revolver. In 1881, Smith & Wesson introduced the .44 

Colt Model 1878 Double Action Revolver .45 Colt Colt Factory Letter Nickel. GI#: 102065254. For sale is a very nice Colt Model 1878 double action revolver in .45 Colt caliber. It has a 7 1/2" barrel. Inspection shows the bore to be in like new condition with no just or pitting. The seri Click for more info.