New type of bullets had been developed which can be programmed to explode when they have travelled a set of distance, having optimum having impact on the enemey. Thats why they are called "smart" bullets.
Fired by XM25 rifle has a range of 2,300 feet, hitting targets well out of the reach of conventional rifles.
The rifle's gunsight uses a laser rangefinder to determine the exact distance to the obstruction, after which the soldier can add or subtract up to three metres from that distance to enable the bullets to clear the barrier and hit the target.
The 25-mm round contains a chip that receives a radio signal from the gunsight as to the precise distance to the target.
- IANS Inputs. Daily Mail