KSG 12

The  is a pump-action shotgun featured in Call of Duty: Modern Warfare 3.

Multiplayer
The KSG 12 is unlocked at Level 4 in multiplayer. The KSG is a high capacity pump action shotgun dealing low damage. The KSG-12 is a relatively poor shotgun, featuring the fewest pellets per shot and lowest damage per pellet of any manual-action shotgun (the others being the SPAS-12 and Model 1887), as well as being slightly slower than the aforementioned weapons at 60 RPM. The Damage proficiency is highly recommended to combat this flaw. However, this shotgun is almost unparalleled in terms of capacity, tied with Striker at a 12 shell capacity. In addition, the damage at the edge of the KSG's range is moderate, but kills at this range are unlikely due to the slow pump action and the limited pellets per shot. When fired from close ranges, however, it will most likely kill provided the target is placed directly in the center of the aiming system (hipfire or ADS). As with all other pump-shotguns, enemies with Ballistic Vests are near-impossible to kill, and it is highly advised to switch to a sidearm or use grenades to eliminate anyone known to have vests on.

Use of both the Grip attachment and Steady Aim perk is a waste, as the hipfire accuracy and spread is the same with only one of the options, this opens up the tier 3 perk slot for more useful options, such as SitRep (for being able to reach enemies unhindered by claymores and Bouncing Betties) or Dead Silence (for being able to sneak behind enemies and get them into range). Use of the Specialist Strike package can be handy, as it will allow the user to get all the other perks to improve the users chances of earning more kills (such as Assassin or any of the above mentioned perks), giving this weapon the edge.

Due to the longer range of shells (but low damage at long range) compared to other shotguns, it excels in Hardcore gametypes, as it will virtually always kill an enemy if they are in range of the pellets. This, combined with its large magazines make it excellent in the short-range nooks and crannies on hardcore, when it is unknown whether another enemy will attack while you reload. Note though, that like in standard game modes, hitting the enemy with less than two/three pellets will cause the enemy to survive the shot, and leave you defenseless for a brief, but significant moment. Use on open maps (such as Village or Outpost) is absolutely NOT recommended in any way, as the very few places where it will work well are easily avoidable and even more so flankable.

Weapon Attachments

 * Grip- Unlocked at weapon level 2.
 * Silencer- Unlocked at weapon level 5.
 * Red Dot Sight- Unlocked at weapon level 12.
 * Holographic Sight- Unlocked at weapon level 17.
 * Extended Mags- Unlocked at weapon level 26.

Profeciencies

 * Kick- Unlocked at weapon level 4.
 * Focus- Unlocked at weapon level 9.
 * Attachments- Unlocked at weapon level 14.
 * Melee- Unlocked at weapon level 19.
 * Range- Unlocked at weapon level 23.
 * Damage- Unlocked at weapon level 28.

Trivia

 * The KSG 12 is the second bullpup shotgun in the Call of Duty series, the first being the HS-10.
 * The KSG 12 has the largest standard ammunition capacity out of all pump, bolt, or lever action weapons in the Modern Warfare series and is tied with the Striker as the shotgun with the largest standard ammunition capacity.
 * Oddly, in Survival Mode, it is listed as a "Double-barrel" shotgun.
 * Similar to the SPAS-12, the KSG 12 shoots 50% more pellets when used with extended mags.