Research & field studies have proved that most lethal injuries are caused mostly by splinters & fragments hitting the head, making it to be the most susceptible and injury prone area resulting in higher mortality rates in the war zones. Also, the death/wound toll from bombing has superseded the fatalities caused by bullets. Hence helmets need to protect the soldier against fragments and flying projectiles of exploded artillery.

To measure ballistic performance against these fragments, MKU helmets rely on Ballistic Test Standards STANAG 2920 & MIL-STD-662-F.

In both standards, the helmets are tested using Fragment Simulating Projectiles (FSP's). The 17 grain (1.1058 gms), .22 calibre FSP is the most commonly used FSP for evaluating the performance of a military helmet shell.

The purpose of the test is to arrive at the V₅₀ value of the helmet. The V₅₀ value describes the penetration velocity at which a projectile is stopped 50% of the times. The higher this value, the better is the protection offered.