Special chainsaw

[woodworkingboy]

Doesn't look to promising based on the video. At the speed it cuts, I don't really get the connection with the gun. It's more like something that could find application on a Swiss army knife.

 

[Newfie]

The key is to find the rotten spots on the door you want to breach.

 

[Knotahippie]

4 batterys, still cuttin'.