Does krav maga mainly consist of striking or grappling?

Krav incorporates both. The striking is mainly based off boxing in terms of proper technique and a majority of the strikes it teaches but also uses open palm strikes, karate chops and hammer fists. It also teaches low risk kicks like groin shots and what have you. Nothing like you would see in a tkd fight unless your a high level practitioner of krav. The grappling part is more defensive and wrestling based if anything. They wont teach you how to fight on the ground but rather more defensive techniques to GET off the ground and to your feet. But if you do find yourself in a bind they do teach you how to perform guillotines, arm bars, triangle chokes, etc. Krav is a brutal form of defense to quickly immobilize your opponent and to get out fast, not to hang around, exchange blows and grapple.