How hard are concrete walls to get through with explosives? Is a hand grenade enough or do you need a breaching charge like on the video games like call of duty modern warfare 2? Don't try this at home!

Here is link to Pommijätkät video from the same day    • Betonielementin räjäytys!!  

Link to Perustava Youtube channel for more concrete stuff    / @perustavagroupoy