User blog comment:Uzuan/Nexon no logic at all facts/@comment-9612827-20140216140244/@comment-24249644-20140216142205

It's possible that Tempest may be lighter than knife, because it's a part of Science Fiction weapon.

Scout weight when not attached a scope & unloaded is 3 kg in real life, which is heavier than knife, but it have a low damage as a bolt-action sniper rifle in Counter-Strike series, maybe Valve make it lighter than knife so it can dodge bullets easily.