It can be purchased later in the game at the Blackwatergunsmith in the West Elizabeth chapter for $800 (or $400 if Honor is high enough or $1200 if Honor is low enough) and holds 15 rounds. Due to its large magazine and medium power, it is very effective on horseback. It is also very useful when used in Dead-Eye, allowing the player to mark and execute many enemies. The large magazine also makes this gun very effective with more of the upper levels of the ambient challenges, i.e. the sharpshooter challenges.
The player may also complete the Rockstar Games Social Club challenge to unlock the Gun Set 4 "cheat" for this weapon if they want (See Cheats in Redemption page).
It is seldom found being used by players in Free Roam, due to it being unlocked at level 49 (the penultimate level of experience) and the fact that players entering Legend mode lose access to the weapon until returning to level 49.
It is a very effective weapon against any other player in any game mode, due to its somewhat large magazine size and high fire rate.
The weapon will kill any NPC with one shot to the torso or head, making it very useful against Lawmen, malicious townsfolk, and other NPCs.
The Mauser Pistol in Multiplayer has a noticeably slower fire rate than in Single Player.
The Mauser Pistol is a fully automatic gun, meaning that if the fire button is held down, the gun will shoot continuously until the magazine empties, making it the only automatic weapon that is not mounted. However, the rate of fire is drastically reduced in multiplayer.
The player can fire the Mauser Pistol more quickly in multiplayer by firing it as a semi automatic gun, and rapidly tapping the fire button.
Having the largest magazine capacity of any pistol makes the Mauser an excellent choice for Dead-Eye Targeting, as well as dueling.
Although it isn't the most powerful handgun available, the large magazine and high rate of fire can allow the user to engage multiple targets without constantly reloading.
The player can get the Mauser pistol and all other rare weapons in Blackwater at the beginning of the game by getting arrested in a certain area north of MacFarlane's Ranch and being transported to Blackwater given you have the funds and are able to make the jump back across Dixon's.
The Mauser Pistol, when used with Dead-Eye, has enough shots for the player to put two or more bullets into each respective body part (2 head, 2 chest, 2 left arm, 2 right arm, 2 left leg, 2 right leg, 3 extra shots).
The Mauser Pistol is based on the real world Mauser C96.
John Marston is shown holding a Mauser in some of the game's loading screens.
When duelling, Marston's animation is shown fanning the "hammer" as if he were firing a single-action revolver, despite the fact that the Mauser is an automatic, similar to the Semi-Automatic Pistol and High Power Pistol.
When the year becomes 1914, one of the newspapers assures that even though WWI is being fought, the sale of German Mauser Pistols will not be halted.
It would be more historically correct to refer the pistol as the M721 "Schnellfeuer", the fully automatic variant of the Mauser C96 Pistol, yet it did not exist until the 1920s-30s.