Sigma's Revolver

This revolver, was crafted by a Metal Release user, and the first one to be done by so. The gun itself, is a repeating firearm that has a revolving cylinder containing multiple chambers and at least one barrel for firing. The term "revolver" refers to a handgun, but other weapons may also have a revolving chamber. The gun has six chambers in the cylinder, giving rise to the slang term "six-shooter"; however, revolvers with 3 to 24 chambers have been made, with most modern revolvers having 5 or 6 chambers.

Tip Up
The tip-up type was a variant of the break-open that had a hinge on the top rear of the frame. Which also includes, an injector.

Single Action
In a single-action revolver, the hammer is manually cocked, usually with the thumb of the firing or supporting hand. This action advances the cylinder to the next round and locks the cylinder in place with the chamber aligned with the barrel. The trigger, when pulled, releases the hammer, which fires the round in the chamber. To fire again, the hammer must be manually cocked again. This is called "single-action" because the trigger only performs a single action, of releasing the hammer. Because only a single action is performed and trigger pull is lightened, firing a revolver in this way allows Sigma to achieve greater accuracy.

Double Action
In double-action (DA), the stroke of the trigger pull generates three actions:


 * The hammer is pulled back to the cocked position.
 * At the same time, the cylinder is indexed to the next round.
 * The hammer is released to strike the firing pin.

Thus, DA means that a cocking action separate from the trigger pull is unnecessary; every trigger pull will result in a complete cycle. This allows uncocked carry, while also allowing draw-and-fire using only the trigger. A longer and harder trigger stroke is the trade-off. However, this drawback can also be viewed as a safety feature, as the gun is safer against accidental discharges from being dropped.

Trivia

 * Alot of this information was taken from Wikipedia.