Valve released a new update for Counter-Strike: Global Offensive (version 1.35.1.2J), which adds a number of new features and enhancements to the popular competitive game, but there is a addition in the spotlight. Valve introduced a new secondary weapon, the R8 Revolver, which according to some players, "broke" the game.
This is a gun which kills with one shot and can be fired while moving with an efficiency of almost 100%. The weapon takes a while to warm up, but it seems to be very powerful, or overpowered. This has led many players to express their displeasure with the situation, as evident over on Reddit .
Valve has not revealed whether it will change the guns mechanics soon, or if it is operating as intended. You can see the full list of changes in the update here.