The USP is a powerful semi-automatic pistol available to both teams, although, it is the spawnpistol for the Counter-Terrorists. The USP is commonly described as superior to the Terrorist spawn pistol, the Glock, and nearly equal to the more expensive P228. For those reasons, the USP is popular due to being kept during the pistol round and sometimes many rounds afterward. It is also the only pistol that can be equipped with a suppressor for those who wish to achieve silent kills.
The USP is a fairly light weapon. While wielded, the player's movement speed is 250 units per second, meaning they suffer no speed reduction. The USP is one of the many weapons able to shoot underwater.
The USP is a suitable pistol for close and medium ranges and its fair amount of damage per bullet makes the USP a good pistol for picking off enemies at the ranges. It is highly recommended to use when enemies are scattered and alone.
If you use the silencer, aim at the head is advised due to the low damage.
The attachable silencer is good for killing enemies from behind, before they notice you. Due to the lower damage, it is not recommended for straight combat.
For close battle, fire continuously, target the head for the first two shots. Then move down to the stomach starting the third shot. Chances are your next shot will hit their head.
If you are planning on using the USP's silencer, attach it at freeze time so you have it ready later.
Many human players prefer not to use the silencer for the USP due to the lower damage. However, the silencer decreases recoil and increases accuracy so experienced users should be aware if they want to use it or not.
The USP was originally planned to be colored black in Counter-Strike. However, the blue-purple color was used instead. Although, the worldmodel still retains its black finish and the USP in Condition Zero: Deleted Scenes used the same black finish as seen in the worldmodel, and the sliencer is quite different.
Some bots will automatically attach the silencer by themselves but some others will not use it or will remove the silencer.
Before Counter-Strike: Source, the silencer attaching/detaching animation can be skipped by starting it and then quickswithing the USP to any other weapon. It makes the silencer much faster to attach or detach. The same glitch appears with the M4A1.