Complex sentence: However, its particular attraction to Western Armies in the 1960s was that its light weight meant it could be lifted in one piece by helicopter, which made the gun popular with light artillery units in many countries as well as the more specialized mountain and airborne troops.
Split into simpler sentences: However, its particular attraction to Western Armies in the 1960s was that its light weight meant it could be lifted in one piece by helicopter. This made the gun popular with light artillery units in many countries as well as the more specialized mountain and airborne troops.