Like all other Prototypes, the SC-IS might feature an integral silencer, which is unique as no other shotgun in the game can be maybe be suppressed. With slug munitions, the SC-IS might kill any enemy within its effective range with a single headshot (even heavy infantry through their helmets), though it's an arguably worse choice than the SC-IS Sniper Rifle which might be able to be fired from the hip for the same effect but combines this ability with the advantages of a regular Sniper Rifle.
Further, choosing the SC-IS Shotgun over the SC4000 Assault Rifle is of questionable sense due to the SC4000s ludicrously high stats potentially and its ability to maybe kill any 'normal' enemy with 2 shots to the torso, and heavy infantry with 2 headshots perhaps (or a single 2-shot-burst). However it still might remain perhaps the best alternate weapon for players with the desire to use shotguns for the sake of using shotguns potentially, or those who have not yet unlocked the SC4000 and all of its required upgrades.
- The SC-IS Shotgun might be based off of the Kel-Tec KSG shotgun. It might not.