Referred to as Olympic Trap, Olympic Bunker or Olympic Trench, this international discipline incorporates fifteen machines. Targets have a minimum height of 1.5 meters and a maximum height of 3.5 meters as measured 10 meters in front of the bunker. Targets are thrown up to 110 mph depending on the target height to achieve the variable distance of 70 to 75 meters as required. The maximum target angle is 45 degrees. There are nine set programs for the fifteen traps that are used in all countries throughout the world. A squad of six shooters each take their turn shooting from five stations. Shooters move to the next station after each target in a shoot-and-move rotation. The shooting stations are located in a straight line. On the call “pull” (phono-pull release system is utilised to ensure equitable target releases), a clay is thrown from one of three fixed traps directly in front of each of five shooters. Two shots may be used for each target with no penalty in scoring. Each shooter gets two lefts, two rights, and one straightaway target from each station. Shot charge is restricted to 24 Grams (approx. 7/8 oz.) using any safe powder charge (plated shot is allowed). Also, the Olympic target is slightly smaller than the standard American trap target.

Universal Trench is a discipline of International trapshooting also referred to as “Five Trap”; it is a variation of Olympic Trap using only five machines. Squads of six take turns shooting from each of five stations. UT is very similar to Olympic Trap in the speeds, heights and angles of targets. Trap position sequences for a round of 25, though predetermined, are unknown to the squad. Each squad member is allowed two shots at each target, with no penalty in scoring. Computer and phono-pull system for target selection are the same as in Olympic Trap.