The first of a new series of SMART weapons. The Grinder incorporates a series of minute gyroscopic stabilizers, helping the weapon to achieve a more manageable recoil. This translates into the manufacturer being able to reduce the overall weight of the gun, ultimately resulting in an increased operator movement speed.
The Grinder features a very high damage rating coupled with an extremely high rate of fire, rivaling the KR-15 as the fastest in the entire assault rifle class, making the weapon akin to a hybrid of an assault rifle and a submachine gun. Like other Prestige weapons, the Grinder also comes with maximum armor penetration. The Grinder's insane rate of fire and potential 2-3 shot kill give it the fastest time-to-kill of any automatic weapon in the game. Like the Stacker and the Enforcer, however, its accuracy rating is lower than that of rifles such as the KOG V or PR39, and it exhibits significant recoil, making it most optimal for close-mid range combat, where it's ROF helps to compensate for its below-average accuracy. The Grinder cannot equip a grip to improve accuracy, though a silencer can be equipped to improve accuracy and mitigate recoil.
In addition, the weapon features a unique SMART mechanic resembling the one of the mechanic of the Stacker, in which each successful hit increases the shooter’s movement Speed by 2%, which can be stacked up to 10 times. Each stack lasts up to 20 seconds. (The speed boost will also reset to 0 if the player swaps weapons).
The Grinder's rate of fire statistic is misleading, listing it as lower than that of weapons such as the KOG V and the Enforcer. In practice, however, the weapon will empty a 45 round magazine in just over 4 seconds, which gives it a ROF in the range of 600 RPM, among the highest of any assault rifle in the game, even surpassing most submachine guns.
Originally the Grinder had much lower recoil, however the weapon was considered overpowered and its recoil was significantly increased in a nerf by Gameloft. Likewise, the damage was slightly lowered in subsequent patches.