The D.D. Packenbush Double-action Revolver is a fast-firing weapon with relatively low damage. The advanced mechanism prevents the need to cock, at the cost of a heavy trigger pull and lower accuracy. The quick fire rate makes this a good choice for mounted combat. This gun has an ammo capacity of six rounds, and can use Regular, High Velocity, Split Point, Express and Explosive revolver ammo.
Lonnie's Shack - The player can also obtain one in regular gameplay or during the Homestead Robbery offered by Sean MacGuire (also in Chapter 3), where it is found in a gun case hidden under one of the bunk beds. It should be noted that if one is acquired during regular gameplay another will spawn during the homestead robbery.
If the player has an Honor rank of -4 or lower (25% or less on the Honor bar), a unique Gunslinger Ebony grip becomes available for this weapon, obtainable from any Gunsmith.
The player may also be able to purchase this grip with the corresponding amount of high Honor, likely as a result of an oversight.
The Double-action is the only revolver that can't be customized with pearl grips.
This weapon is the sidearm of choice for Javier Escuella. His version is silver-plated with black engravings, and has a black grip embellished with silver carvings. Additionally, its barrel is slightly longer than that of the regular Double-action Revolver and it makes its own distinct sound.
The only way to unlock the Gold customisation is to complete a scavenger hunt in Grand Theft Auto Online, which was added by said game's Doomsday Heist DLC.
This is the only sidearm where the loaded rounds can be seen in first person view. Regardless of how many rounds are fired, it will always show unfired cartridges, but if less than six rounds are loaded the empty chambers can be seen.