The gun broke right out of the box. I put a battery in and the gears inside were grinding or very noisy. I've never had a drywall gun before so I thought it sounded like it until I took it to work and I had problems with it all day so I gave it back to Kolya and went straight home, got a new one and it worked fine , the gun is cool and very quickly i also got the pick up nozzle which works much faster than by hand