You take a grinder on a mission, you saw the ATM until it opens, there you have to saw it inside in 4 corners.
You pump the skill of the grinder, buy it (on the second page of the main weapon), take it on a mission and saw the target you need, there is a sign of the blade where you need to cut it.
only with a saw on transport maps can you cut down all the cells as quickly as possible.
irreplaceable thing.
nothing can be blown up at all, except for some safes and armored cars. and even this requires the skill "technique", also from the very top row.
Well, you still ask why you can’t just buy a grinder in a store. or why the rifle stands like a villa in the mediterranean... it's payday2, agility simulator!