The MV is the group's first to reach the feat, and it's even more amazing because it's their most recent MV. At about 5 months since the release, it is now the K-pop group MV to have reached 300 million views in the shortest time. Their "Fire" will also reach 300 million soon, with almost 297 million views (at time of writing).
Congratulations to BTS! You can re-watch the MV here.