a laser range-finder as well as a ballistics computer, the K11 allows the operator to quickly find the distance to a target and launch an airburst shell. The shell will then detonate a few meters away from the target. An electronic scope is integrated on the K11; it can be linked to a goggle system with a digital display. The display can be used during nighttime with thermal imaging, and shows the range information from the laser range-finder. The weapon is compatible with standard 20- or 30-round 5.56×45mm NATO magazines, and can hold 6-round magazines of 20 mm shells at one time. The fire selector position and layout is similar to the M16/M4 rifles' selector, though some controls are different. It has four positions, three of which are: 9 o'clock for safe; 6 o'clock for three-round burst for the rifle; and 3 o'clock for semiautomatic fire for the rifle. The fourth selector position is at 12 o'clock and controls the grenade launcher, allowing bullets and grenades to be fired using the same trigger. Because of this they both cannot be available at the same time. There are two types of 20 mm grenade rounds for the K11; the K168 training round is for practice and has no explosives, while K167 explosive ammunition weighs and has an internal fuse with three selectable settings for point detonation, point detonation-delay, and airburst. The integrated weapon sight programs the airburst warheads after the laser rangefinder sights a target when the launcher is selected (the sight automatically provides aiming points for either bullets or grenades when their firing modes are selected). Point detonation explodes the shell on impact with a target and point detonation-delay lets the warhead penetrate a target before exploding; penetration ability is unknown. The airburst setting detonates the grenade round in front of, over, or behind a target to hit troops in cover yielding an airburst effect capable of killing targets within a 6 m area and seriously wounding those within an 8 m area. Users enter a range at which the shell is to detonate into the sighting unit, which automatically calculates the time of flight and sets the chambered round's fuse to detonate when it reaches that point. If a round is not fired within two minutes of targeting information being programmed, it will disarm itself. If a grenade does not explode, a backup self-destruct safety mechanism automatically detonates it