I have a strong passion for this feature. I can't quite explain it, but nothing would make me happier than to see a single action revolver, specifically the 1875 Remington Outlaw or more likely the iconic Colt Single Action Army implemented into DayZ.

I'll try to explain it. DayZ is about survival of course. But it's also about exploration. It's about society banding together and planting the seeds of civilization on a bleak and brutal new frontier. DayZ and other apocalypse genre media take their roots from the western. The western is at the heart of cinema and is the basis and a major inspiration behind franchises such as Star Wars (think Han Solo and the Cantina shootout in the desert planet of Tattooine or Luke's story which parallels John Wayne's story from The Searchers) and Terminator (Aside from the apocalypse theme, think Terminator going into the country bar and taking a Winchester 1887 which is an iconic old west shotgun and riding off on a steel horse).

Long story short, when I play DayZ I have this feeling of being a character in a western. This connects me to my grandfather who loved westerns. I inherited his Colt Single Action Army. The western isn't as relevent today as it was when my grandfather was a child. But the narrative of the western is taken and put into modern franchises and in that way it is very much alive.

It is for these reasons and more that I would very much like to see a Single Action Revolver implemented into DayZ.

As for the mechanics - on a single action revolver as you pull the hammer back you will hear it click 4 times. Each time you pull the hammer back it will rotate the cylinder 1/6 around for each of the 6 rounds. Also, you can hold the trigger down and "fan" the hammer for rapid fire.

The first click is the "safety position" in which the trigger cannot be pulled and the gun is "safe" (although can still go off if the gun is dropped or if the hammer is hit with some significant force which is why it's recommended to keep the gun loaded with only 5 shells and have the hammer resting on the empty chamber).
The 2nd click or the "half cock" is for reloading. In this position, the loading gate can be opened and the cylinder can be turned. You must turn the cylinder and manually eject each shell case with the ejecting rod and load each shell in one by one through the loading gate.
The 3rd click is the cylinder bolt locking against the cylinder.
The 4th click or "full cock" is when the hammer is fully cocked back and ready to fire.

There are 2 possible ways this could be implemented into the game. The first and easiest way would be to use your gun function or reload key once per shot and click for each shot. You could then hold the left click down and hit your reload key to fan fire. The other method would be to tap r 3 times for each shot, or to put the gun in safe mode you could tap r once, to reload you could tap r twice, and to fire you'd tap r 3 times and then click. Although I like the idea of the latter more complex method I think the former single press method would be better for simplicity sake. 

Additional information on this here: http://www.solidsmack.com/design/the-grit-the-gun-and-the-4-stages-of-product-design-retribution-inddes/ Another feature for this weapon once pistol whipping is implemented will be it's ability to function as a great melee weapon due to it's robust, heavy frame. I've brought this idea up before elsewhere. Some people really like it but others have said that the gun would be out of place in Eastern Europe. My rebuttal to this is that the lever action rifle is in the game and it is no more out of place than this would be. In addition, there are Cowboy Shooting clubs in the Czech Republic so these guns are certainly in the area although they may be rare. As seen here: http://webcache.googleusercontent.com/search?q=cache:http://www.realwestern.com/firearm/ Personally I feel the iconic nature of the weapon and its ties to culture and roots in the sort of history and theme behind the apocalypse genre not only warrants it's inclusion but demands it. I hope you feel the same way.

Below I will leave other references to this gun in culture and history as well as some pictures of the Remington 1875 and Colt SAA.

The SAA in the Fallout franchise:
http://static.giantbomb.com/uploads/original/1/17015/1560962-falloutnv_2010_10_19_17_38_21_38.png The gun can be found in original "Van Buren" Fallout 3 before it was scrapped: 
https://i.ytimg.com/vi/lr1OcNPpSro/maxresdefault.jpg Revolver Ocelot from the Metal Gear tells you what the greatest handgun ever made is: 

https://www.youtube.com/watch?v=YTIG_hO8tg0
The Remington 1875 Outlaw. The main difference between this and the Colt SAA is the "web" under the barrel, a design left intact from the ramrod on the legendary black powder Remington New Model Army. It adds some heft to the gun, making it great for a melee weapon and reducing recoil.

http://www.taylorsfirearms.com/media/catalog/category/1875-Army-Outlaw-Revolver-ProductPageLW462.jpg   A beautifully engraved Colt Single Action Army: 
http://www.engravingtransfers.com/Dubber CCA 2013-0001.jpg   hickok45 shooting the Remington 1875 Outlaw: 
https://www.youtube.com/watch?v=eP9knGpzMw4

Thank you for reading. Please do consider implementing this treasure of a weapon. It's history and lore surely deserves a place in the greatest zombie survival game ever made. If you agree please support this idea! Thank you.