No Scope

Performing a no-scope, or no-scoping, is the action in which a player with a Sniper Rifle, Particle Beam Rifle, and possibly a Battle Rifle or Carbine (any weapon which has a built in scope) kills a target without using the scope, usually by performing a headshot. Headshots are often difficult to pull off, especially on a moving target.

Tips on No-Scoping

 * Sidestep with the target and slowly aim so that he runs into your cursor.
 * Slowly aim downwards towards their head.
 * Have luck.

No-scoping moving targets is almost impossible unless they're coming at you heads on, so if possible use the scope or just switch to another weapon is the target is close range.