
Due to its close-quarters effectiveness and early unlock, it is a commonly seen sidearm. However, KAP-40 is fully automatic, making it more suitable for players with worse aim. Compared to the KAP-40, the B23R has lower recoil and higher damage per second, should the player kill with one burst, and burst-fire can control ammo consumption.

It is a popular sidearm in Hardcore game modes as it only needs up to two bullets to kill, making it excellent even for long range combat. Due to its high damage per second potential as well as fast aim down sight time, it is very effective in close quarters, though it loses effectiveness at range where the damage dropoff combined with the recoil and low magazine size offset its fire rate. Like the M8A1, it has no extra headshot multiplier, meaning it is recommended to aim at center mass to make the bullets count. It will kill in one burst at close range and two at a distance, assuming all bullets hit. It is a three-round burst pistol with a high rate of fire and moderate recoil, as well as a smaller burst delay compared to other guns. The B23R is the third pistol to be unlocked at level 19.

This variant also has a different firing sound, which is noticeably lower than the sound of other firearms in the game. In the mission " Karma", if the player kills the guard who opens the weapons locker after searching for Chloe, he may drop a B23R with a semi-automatic firing function. It does not have any delay between bursts, unlike its multiplayer counterpart. The B23R can be selected in the customized loadout, and is also a part of the recommended loadout in " Achilles' Veil".
