Any gun is cursed if it's meant to be shoulder-fired but has the stock removed and has a scope. The MP5K is fine because it's made to be the way it is (plus, you're meant to use a different technique, straight-arming your support arm while grasping the foregrip, and you'll never see a SWAT operator put a scope on one of those). Sporting handguns with scopes are fine, though they take a lot of practice to master. But take a full-size SMG that's meant to have a stock, take the stock off, and add a scope, and it's more cursed than any of the Uniques you'll find in the Captain Scarlett DLC in Borderlands 2. Same for any gun that has a folding or collapsible stock, but the user leaves the stock in its storage position for no reason. They do that all the time in movies and TV shows, and that lame cliche carried over into video games. Edit/Note: Mag-ditching reload animations are also cursed, especially if the mag is of a rare, expensive, or complex type like a drum that you'd never ditch IRL. Tactical reload are always preferred over emergency reloads. In video games, emergency reloads should be optional, not obligatory.